AOD9604 Technical Manual¶

Field	Value
Document Title	AOD9604 — Complete Technical Documentation
Document ID	RPL-TM-AOD-001
Document Type	Complete Technical Documentation Manual
Publisher	RPL Peptide (Qingdao RPL Biotechnology Co., Ltd.)
Version	1.0
Revision Date	July 2026
Status	Current
Intended Audience	Research laboratories, procurement professionals, quality assurance teams, biotechnology organizations, and scientific researchers
Scope	This manual covers the complete technical documentation for AOD9604 (CAS: 2212311-22-3), including product specifications, analytical methods, safety data, handling protocols, quality standards, and supporting reference materials for laboratory research use.
Keywords	AOD9604, HGH fragment 176-191, synthetic peptide, growth hormone fragment, research peptide, laboratory reagent
How to Cite This Document	RPL Peptide. (2026). AOD9604 Technical Manual (Version 1.0). RPL Peptide Official Technical Documentation. https://rplpeptides.com

Peptide Identity¶

Field	Value
Preferred name	AOD9604
Synonyms	AOD 9604; hGH fragment 176–191 analog; modified human growth hormone fragment
CAS Registry Number	221231-10-3
Amino acid sequence	Tyr-Leu-Arg-Ile-Val-Gln-Cys-Arg-Ser-Val-Glu-Gly-Ser-Cys-Gly-Phe (YLRIVQCRSVEGSCGF; 16 residues; Cys7–Cys14 disulfide; C-terminal free acid)
Molecular formula	C₇₈H₁₂₃N₂₃O₂₃S₂
Molecular weight	1,815.08 Da (average)
Monoisotopic mass	1,813.86 Da (calculated)
Salt form	No defined salt form stated; residual TFA (if applicable) documented as <10% w/w (this manual, SDS Section 3)
Research classification	Modified human growth hormone fragment (16 residues); laboratory research reagent

Record verification (2026-09-16): CAS 221231-10-3, molecular formula, and calculated mass cross-checked against the PubChem record for AOD9604, CID 71300630 (https://pubchem.ncbi.nlm.nih.gov/compound/71300630); the sequence and disulfide connectivity follow the AOD9604 structure entry at https://en.wikipedia.org/wiki/AOD9604. Note: the Chapter 1 specification table lists CAS 2212311-22-3, which was not found in PubChem; the registry-verified number is shown here. Batch-level identity is confirmed by LC-MS on the applicable COA.

Product Name: AOD9604

Manufacturer: RPL Peptide

Official Product Information: AOD9604

Table of Contents¶

Chapter	Title
1	Technical Data Sheet
2	Certificates of Analysis
3	Product Specifications
4	Safety Data Sheet
5	HPLC Library
6	Mass Spectra Library
7	Storage Guide
8	Solubility Guide
9	Reconstitution Guide
10	Stability Guide
11	Analytical Methods
12	Quality Standards
13	White Paper
14	Technical Bulletin
15	Application Notes
16	FAQ Library
17	Peptide Glossary
18	Documentation Policy

Chapter 1: Technical Data Sheet¶

Official Technical Documentation

Technical Data Sheet

Product Overview¶

AOD9604 (also known as HGH Fragment 176-191) is a synthetic research peptide derived from a modified fragment of human growth hormone. It is widely referenced in scientific literature for peptide characterization, analytical method development, and preclinical experimental investigations.

Product Specifications¶

Parameter	Specification
Product Name	AOD9604
CAS Number	2212311-22-3
Molecular Formula	C₇₈H₁₂₃N₂₃O₂₃S₂
Molecular Weight	1,815.08 Da
Peptide Type	Synthetic peptide, HGH Fragment 176-191
Amino Acid Count	16
Appearance	White to Off-White Lyophilized Powder
Purity (HPLC)	≥98%
Peptide Content	70–90%
Water Content (KF)	<5%
Endotoxin	<5 EU/mg
Solubility	Soluble in water, PBS, saline
pH (1% Solution)	4.0–6.5
Storage (Lyophilized)	-20°C (2+ years)
Storage (4°C)	12 months
Reconstituted Stability	2–8°C for 30 days
Package Sizes	5 mg, 10 mg, 20 mg per vial, 10 vials per box
Certification	COA, HPLC, LC-MS

Molecular Characteristics¶

Molecular Class: Synthetic research peptide/biochemical
Structural Features: Linear peptide sequence with standard amino acid composition
Research Category: Biochemical research, cell biology, metabolic studies
Mechanism of Interest: Receptor-mediated signaling / Biochemical activity

Quality Assurance¶

Each batch is tested using validated analytical methods:

HPLC purity analysis at 214 nm
LC-MS molecular weight confirmation (±0.5 Da)
Amino acid analysis for sequence verification
Karl Fischer water content determination
LAL endotoxin testing

Reconstitution Protocol¶

Step	Action
1	Allow vial to reach room temperature (15–25°C) before opening
2	Reconstitute with sterile water-for-injection, PBS, or 0.9% saline
3	Gently swirl; do not vortex
4	Allow 5–10 minutes for complete dissolution
5	Use within 30 days when stored at 2–8°C
6	Aliquot to avoid repeated freeze-thaw cycles

Regulatory Disclaimer¶

AOD9604 is sold for laboratory research use only. It is not for human or veterinary use, not for diagnostic purposes, and not for therapeutic applications. This product is not a drug, food, cosmetic, or medicinal product.

Chapter 2: Certificates of Analysis¶

Official Technical Documentation

Certificate of Analysis

Certificate of Analysis Template¶

Field	Value
Certificate No.	[COA Number]
Product Name	[Product Name]
Batch/Lot Number	[Batch Number]
Date of Analysis	[Analysis Date]
Date of Manufacture	[Manufacture Date]
Expiry Date	[Expiry Date]
Quantity	[Quantity]
Manufacturer	Qingdao RPL Biotechnology Co., Ltd.

Analytical Results¶

Parameter	Specification	Result	Method
Appearance	White to off-white powder	Conforms	Visual
Purity (HPLC)	≥98.0%	[HPLC Result]	HPLC 214 nm
Peptide Content	70–90%	[Content Result]	UV 280 nm
Mass (LC-MS)	±0.5 Da of calculated	[Mass Result]	LC-MS ESI-TOF
Water Content (KF)	<5.0%	[KF Result]	Karl Fischer
Endotoxin (LAL)	<5.0 EU/mg	[LAL Result]	Kinetic LAL
pH (1% Solution)	4.0–6.5	[pH Result]	Potentiometric

System Suitability¶

Parameter	Specification	Result
Theoretical Plates (HPLC)	≥2000	[Plate Result]
Tailing Factor	0.8–1.8	[Tailing Result]
Retention Time RSD	≤2.0% (n=3)	[RT RSD]
Signal-to-Noise	≥10:1	[S/N Result]

QC Review¶

Role	Name	Date	Signature
Analyst	[Analyst Name]	[Date]	_____
QC Reviewer	[Reviewer Name]	[Date]	_____
QA Approval	[QA Name]	[Date]	_____

Notes¶

Full analytical data and chromatograms available upon request
Batch records retained for 5+ years
This certificate applies only to the batch listed above
Results reported are for the tested sample only

Chapter 3: Product Specifications¶

Official Technical Documentation

Product Specifications

General Information¶

Parameter	Specification
Product Name	AOD9604
CAS Number	2212311-22-3
Molecular Formula	C₇₈H₁₂₃N₂₃O₂₃S₂
Molecular Weight	1,815.08 Da
Product Type	Synthetic peptide, HGH Fragment 176-191
IUPAC Name	Refer to technical data sheet for full chemical name

Physical Properties¶

Property	Specification
Appearance	White to off-white lyophilized powder
Physical State	Solid (lyophilized)
pH (1% w/v in Water)	4.0–6.5
Solubility in Water	>5 mg/mL
Solubility in PBS	>5 mg/mL
Solubility in Saline	>5 mg/mL
Bulk Density	0.3–0.6 g/mL (typical)

Purity and Quality Specifications¶

Parameter	Limit	Method
HPLC Purity	≥98%	RP-HPLC, 214 nm
Peptide Content	70–90%	UV Spectrophotometry
Water Content (KF)	<5.0%	Karl Fischer
Endotoxin	<5 EU/mg	Kinetic LAL
Residual TFA	<10.0% w/w	HPLC or IC
Residual Solvents	<0.5% per ICH Q3C	GC Headspace
Bioburden	<100 CFU/g	USP <61>

Packaging Specifications¶

Component	Specification
Primary Container	Type I borosilicate glass vial
Closure	Bromobutyl rubber stopper
Seal	Aluminum flip-off seal
Filling Environment	Class 100 (ISO 5) cleanroom
Packaging Quantity	5 mg, 10 mg, 20 mg per vial, 10 vials per box
Secondary Packaging	Box of 10 vials

Storage and Shipping¶

Condition	Requirement
Storage Temperature	-20°C ± 5°C (long term)
Short-Term Storage	2–8°C (up to 12 months)
Shipping Condition	Dry ice or gel packs with temperature logger
Shelf Life	2–5 years from manufacture date
Protection	Protect from light and moisture

Regulatory Classification¶

Jurisdiction	Classification
US	Research chemical, not for human use
EU	Laboratory reagent, not a medicinal product
CN	Research reagent, not a pharmaceutical API
Customs Code (HS)	2934.99 (Other heterocyclic compounds)

Chapter 4: Safety Data Sheet¶

Official Technical Documentation

Safety Data Sheet

SECTION 1: Identification¶

Field	Value
Product Identifier	RPL Peptide Product
Recommended Use	Laboratory research use only
Restrictions on Use	Not for human or veterinary use, not for diagnostic or therapeutic purposes
Supplier	Qingdao RPL Biotechnology Co., Ltd.
Emergency Phone	Contact supplier

SECTION 2: Hazard(s) Identification¶

Classification	Category
GHS Classification	Not classified as hazardous under normal laboratory use
Primary Hazards	Irritant (eye, skin, respiratory) possible with prolonged exposure
Signal Word	Warning
Hazard Statements	H315: Causes skin irritation; H319: Causes serious eye irritation; H335: May cause respiratory irritation

SECTION 3: Composition / Information on Ingredients¶

Component	Concentration	CAS Number
Synthetic Peptide/Compound	>95%	Product-specific
Residual TFA (if applicable)	<10%	76-05-1
Water	<5%	7732-18-5

SECTION 4: First Aid Measures¶

Route	Action
Inhalation	Move to fresh air; seek medical attention if symptoms persist
Skin Contact	Wash with soap and water for 15 minutes; remove contaminated clothing
Eye Contact	Rinse with water for 15 minutes; seek medical attention if irritation persists
Ingestion	Rinse mouth; seek medical attention; do not induce vomiting

SECTION 5: Firefighting Measures¶

Property	Detail
Suitable Extinguishing Media	Water spray, dry chemical, CO₂, alcohol-resistant foam
Specific Hazards	May emit toxic fumes (NOx, CO, CO₂) under thermal decomposition
Special Protective Equipment	Self-contained breathing apparatus for enclosed spaces
Flash Point	Not applicable (solid)

SECTION 6: Accidental Release Measures¶

Action	Procedure
Personal Precautions	Wear PPE (gloves, lab coat, safety goggles)
Containment	Prevent spread; cover with absorbent material
Cleanup	Collect using damp cloth or vacuum with HEPA filter
Disposal	Transfer to sealed container for disposal per local regulations

SECTION 7: Handling and Storage¶

Condition	Requirement
Handling Precautions	Use in well-ventilated area; avoid dust generation; wear appropriate PPE
Storage Conditions	-20°C, dry, protected from light
Incompatible Materials	Strong oxidizing agents, strong acids/bases
Storage Area	Cool, dry, well-ventilated chemical storage

SECTION 8: Exposure Controls / Personal Protection¶

Parameter	Limit
Occupational Exposure Limit	Not established
Engineering Controls	Fume hood recommended
Respiratory Protection	Not required under normal use; N95 if aerosol generation possible
Hand Protection	Nitrile or latex laboratory gloves
Eye Protection	Safety goggles or face shield
Skin Protection	Laboratory coat

SECTION 9: Physical and Chemical Properties¶

Property	Value
Appearance	White to off-white lyophilized powder
Odor	Odorless
pH (1% Solution)	4.0–6.5
Melting Point	Decomposes before melting (>200°C)
Solubility	Soluble in water, PBS, saline
Vapor Pressure	Not applicable (solid)
Density	Not determined

SECTION 10: Stability and Reactivity¶

Property	Detail
Reactivity	Stable under recommended storage conditions
Chemical Stability	Stable in lyophilized form
Hazardous Decomposition	Thermal decomposition: NOx, CO, CO₂
Conditions to Avoid	High temperature, moisture, repeated freeze-thaw

SECTION 11: Toxicological Information¶

Route	Assessment
Acute Toxicity	Not classified as acutely toxic
Skin Corrosion/Irritation	May cause mild irritation
Serious Eye Damage/Irritation	May cause mild irritation
Respiratory Sensitization	Not expected
Germ Cell Mutagenicity	Not classified
Reproductive Toxicity	Not classified
STOT (Single Exposure)	Not classified
STOT (Repeated Exposure)	Not classified

SECTION 12: Ecological Information¶

Parameter	Assessment
Ecotoxicity	No data available; avoid environmental release
Persistence/Degradability	Expected to biodegrade (peptide material)
Bioaccumulation	Not expected to bioaccumulate
Mobility in Soil	Soluble in water; may be mobile

SECTION 13: Disposal Considerations¶

Parameter	Detail
Waste Classification	Chemical waste / laboratory waste
Disposal Method	Incineration at licensed facility per local regulations
Contaminated Packaging	Decontaminate or dispose as chemical waste

SECTION 14: Transport Information¶

Regulation	Classification
UN Number	Not regulated (typically)
UN Proper Shipping Name	Not dangerous goods
Transport Class	Not classified
Packing Group	Not applicable
Special Precautions	Keep cool and dry during transport

SECTION 15: Regulatory Information¶

Regulation	Status
TSCA (US)	Not listed (research chemical)
REACH (EU)	Not registered (research chemical exemption)
EINECS	Not listed
China REACH	Not registered
WHMIS (Canada)	Not classified

SECTION 16: Other Information¶

Field	Detail
SDS Date	July 2026
SDS Version	1.0
Prepared By	RPL Peptide Safety Department
Abbreviations	GHS: Globally Harmonized System; PPE: Personal Protective Equipment; STOT: Specific Target Organ Toxicity
Disclaimer	The information provided is based on current knowledge and is intended for use as a safety guideline. Users should conduct their own risk assessment.

Chapter 5: HPLC Library¶

Official Technical Documentation

HPLC Library

Analytical Method¶

Parameter	Specification
Method	Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC)
Column	C18, 5 μm, 4.6 × 250 mm
Mobile Phase A	0.1% TFA in Water
Mobile Phase B	0.1% TFA in Acetonitrile
Gradient	5–65% B over 30 minutes
Flow Rate	1.0 mL/min
Detection	UV at 214 nm and 280 nm
Injection Volume	10 μL
Column Temperature	30°C
Run Time	40 minutes
Sample Concentration	1.0 mg/mL in water or mobile phase A

System Suitability Criteria¶

Parameter	Limit
Theoretical Plates	≥2000
Tailing Factor	0.8–1.8
Retention Time RSD	≤2.0% (n=3)
Peak Area RSD	≤2.0% (n=3)
Signal-to-Noise	≥10:1

Acceptance Criteria¶

Parameter	Limit
Main Peak Purity Angle vs Threshold	Purity angle < Purity threshold
Single Maximum Impurity	<1.0%
Total Impurities	<2.0%
Purity by Area %	≥98.0%

Peak Identification¶

Peak	Retention Time (min)	Relative Area (%)	Identity
1	[RT-Imp1]	[%]	Impurity
2	[RT-Main]	≥98.0%	Main Peak
3	[RT-Imp2]	[%]	Impurity

Notes¶

Each batch receives its own HPLC analysis
Full chromatograms archived and available upon request
Method validated for specificity, linearity, accuracy, precision, and robustness

Chapter 6: Mass Spectra Library¶

Official Technical Documentation

Mass Spectra Library

Analytical Method¶

Parameter	Specification
Method	Liquid Chromatography-Mass Spectrometry (LC-MS)
Ionization	Electrospray Ionization (ESI), Positive Mode
Mass Analyzer	Quadrupole Time-of-Flight (Q-TOF)
Scan Range	m/z 500–2500
Resolution	≥20,000 (FWHM)
Mass Accuracy	±0.5 Da

System Suitability Criteria¶

Parameter	Limit
Mass Accuracy	±0.5 Da of calculated value
Signal-to-Noise	≥10:1 for base peak

Acceptance Criteria¶

Mass accuracy within ±0.5 Da of calculated monoisotopic mass
Charge state series consistent with expected molecular weight
No significant mass shift or adduct interference

Batch-Specific Data¶

Batch Number	Observed Mass (Da)	Mass Accuracy (Da)	Status
[Batch-001]	—	—	—

Notes¶

Mass spectrometry confirms peptide identity and molecular integrity
Full mass spectra archived and available upon request
Deconvolution performed using MaxEnt or similar algorithm

Chapter 7: Storage Guide¶

Official Technical Documentation

Storage Guide

Recommended Storage Conditions¶

Short-Term Storage¶

Condition	Duration	Container
2–8°C (Refrigerated)	Up to 12 months	Sealed, original vial
-20°C (Freezer)	2+ years	Sealed, original vial
Room Temperature (15–25°C)	Up to 30 days	Sealed, desiccated

Long-Term Storage¶

Condition	Duration	Container
-20°C (Freezer)	2+ years	Sealed, original vial, desiccated
-80°C (Ultra-Low)	5+ years	Sealed, original vial

Reconstituted Product Storage¶

Condition	Duration	Container
2–8°C (Refrigerated)	Up to 30 days	Sealed, sterile vial
Room Temperature	Up to 7 days	Sealed, sterile vial
-20°C (Aliquoted)	Up to 6 months	Sterile, low-binding tubes

Critical Storage Rules¶

Keep sealed — Protect from atmospheric moisture
Protect from light — Store in original packaging or opaque container
Control humidity — Use desiccant in storage environment if possible
Avoid freeze-thaw — Repeated temperature cycling may degrade peptide
Temperature stability — Avoid prolonged exposure above 25°C

Chapter 8: Solubility Guide¶

Official Technical Documentation

Solubility Guide

Solubility Data¶

Solvent	Solubility	Recommendation
Water-for-Injection	>5 mg/mL	Preferred for most applications
PBS (Phosphate Buffered Saline)	>5 mg/mL	Recommended for biological assays
0.9% Saline	>5 mg/mL	Suitable for in vivo studies
DMSO	>10 mg/mL	For stock solutions; limit to <0.1% final in cell assays
Ethanol	<1 mg/mL	Not recommended
Methanol	1–5 mg/mL	For analytical purposes only
Acetonitrile	1–5 mg/mL	For HPLC analysis only

Solubilization Protocol¶

Step	Action
1	Warm product vial to room temperature before opening
2	Add solvent (water, PBS, or saline) gently down the vial wall
3	Allow 2–5 minutes for initial wetting of lyophilized cake
4	Gently swirl or invert vial — do NOT vortex
5	If particles persist, allow additional 5–10 minutes at room temperature
6	Visually confirm complete dissolution with no particulate matter

Chapter 9: Reconstitution Guide¶

Official Technical Documentation

Reconstitution Guide

Reconstitution Protocol¶

Step	Action	Detail
1	Equilibrate	Allow sealed vial to reach room temperature (15–25°C) for 15–20 minutes
2	Prepare solvent	Use sterile water-for-injection, PBS, or 0.9% saline
3	Add solvent	Inject solvent gently against the inner wall of the vial — avoid direct stream onto powder
4	Dissolve	Gently swirl or rotate the vial — do NOT vortex or shake vigorously
5	Rest	Allow 5–10 minutes for complete dissolution at room temperature
6	Inspect	Visually confirm clear, particle-free solution

Reconstitution Volume Guide¶

Vial Size	Recommended Solvent Volume	Resulting Concentration
2 mg	0.5–1.0 mL	2–4 mg/mL
5 mg	1.0–2.0 mL	2.5–5 mg/mL
10 mg	1.0–2.0 mL	5–10 mg/mL
20 mg	2.0–4.0 mL	5–10 mg/mL
50 mg	5.0–10.0 mL	5–10 mg/mL

Best Practices¶

Use sterile, RNase/DNase-free water or buffer
Vortexing and sonication can cause aggregation; avoid if possible
For long-term reconstituted storage, aliquot into single-use portions
Label aliquots with product name, concentration, date, and operator
Store aliquots at -20°C for up to 6 months
Avoid more than 3 freeze-thaw cycles per aliquot

Chapter 10: Stability Guide¶

Official Technical Documentation

Stability Guide

Stability Summary¶

Condition	Duration	Purity Retained
Lyophilized, -20°C	2+ years	≥97%
Lyophilized, 4°C	12 months	≥97%
Lyophilized, 25°C	30 days	≥95%
Lyophilized, 40°C	7 days	≥90%
Reconstituted, 2–8°C	30 days	≥95%
Reconstituted, 25°C	7 days	≥90%
Reconstituted, -20°C (aliquoted)	6 months	≥95%
In solution, repeated freeze-thaw	3 cycles	≥95%

Degradation Indicators¶

Observation	Likely Cause	Recommended Action
Loss of solubility	Aggregation	Discard; obtain fresh material
Change in appearance	Moisture absorption	Discard; check storage conditions
Reduced HPLC purity	Chemical degradation	Replace from fresh batch
Increase in impurities	Hydrolysis or oxidation	Review storage temperature

Chapter 11: Analytical Methods¶

Official Technical Documentation

Analytical Methods

Method Overview¶

RPL Peptide utilizes a comprehensive suite of validated analytical methods to ensure the identity, purity, quantity, and safety of all products.

1. HPLC Method (Purity Analysis)¶

Parameter	Specification
Method	Reversed-Phase HPLC
Column	C18, 5 μm, 4.6 × 250 mm
Mobile Phase A	0.1% TFA in Water
Mobile Phase B	0.1% TFA in Acetonitrile
Gradient	5–65% B over 30 min
Detection	UV 214 nm, 280 nm
Flow Rate	1.0 mL/min
Injection	10 μL of 1 mg/mL solution
Run Time	40 min

2. LC-MS Method (Identity Confirmation)¶

Parameter	Specification
Method	LC-MS with ESI-TOF
Column	C18, 3.5 μm, 2.1 × 150 mm
Mobile Phase	0.1% Formic acid in Water/ACN
Ionization	ESI Positive Mode
Scan Range	m/z 300–2500
Mass Accuracy	±0.5 Da

3. Karl Fischer Method (Water Content)¶

Parameter	Specification
Method	Coulometric Karl Fischer
Sample Size	5–10 mg
Reagent	Hydranal-Coulomat AG
Limit	<5.0% w/w

4. LAL Endotoxin Testing¶

Parameter	Specification
Method	Kinetic Chromogenic LAL
Standard Range	0.005–50 EU/mL
Sample Dilution	1:100 or 1:1000
Limit	<5.0 EU/mg (<1.0 EU/mg for specific products)

Chapter 12: Quality Standards¶

Official Technical Documentation

Quality Standards

Quality Policy¶

RPL Peptide is committed to providing research-grade peptides and biochemicals that meet or exceed customer expectations for purity, consistency, and documentation. Our quality management system ensures:

Batch-to-batch consistency through validated manufacturing processes
Comprehensive analytical testing for every batch
Full traceability from raw materials to finished product
Continuous improvement through customer feedback and internal audits

Manufacturing Standards¶

Standard	Requirement
Synthesis	Solid-Phase Peptide Synthesis (SPPS) with Fmoc chemistry
Cleavage	TFA-based cleavage with appropriate scavengers
Purification	Preparative RP-HPLC (≥95% purity target before QC)
Final QC	100% batch testing before release
Cleanroom	Class 100 (ISO 5) filling environment
Water System	USP Purified Water / WFI quality

Analytical Specifications¶

Test	Acceptance Criteria
HPLC Purity	≥98.0% (area % at 214 nm)
LC-MS Identity	Within ±0.5 Da of calculated mass
Peptide Content	70–90% by UV or other methods
Water Content	<5.0% by Karl Fischer
Endotoxin	<5.0 EU/mg
Appearance	White to off-white lyophilized powder

Chapter 13: White Paper¶

Official Technical Documentation

White Paper

Abstract¶

This white paper provides a comprehensive overview of AOD9604, a research-grade Synthetic peptide, HGH Fragment 176-191 manufactured by RPL Peptide. It covers the biochemical background, research applications, analytical characterization, and quality considerations relevant to laboratory research use.

1. Introduction¶

AOD9604 (also known as HGH Fragment 176-191) is a synthetic research peptide derived from a modified fragment of human growth hormone. It is widely referenced in scientific literature for peptide characterization, analytical method development, and preclinical experimental investigations.

Research applications for this class of molecule continue to expand, driven by advances in peptide chemistry, understanding of receptor pharmacology, and growing interest in metabolic pathways.

2. Biochemical Background¶

Synthetic peptides and biochemical coenzymes represent a critical category of research tools for investigating cellular signaling, metabolic regulation, and physiological processes. AOD9604 is produced through solid-phase peptide synthesis (SPPS), enabling precise control over sequence, purity, and structural integrity.

2.1 Synthesis and Characterization¶

The manufacturing process involves:

Solid-Phase Peptide Synthesis: Stepwise assembly on resin support using Fmoc chemistry
Cleavage and Deprotection: TFA-mediated cleavage with appropriate scavengers
Preparative Purification: RP-HPLC to achieve target purity
Lyophilization: Gentle freeze-drying to produce stable powder
Comprehensive QC: Multi-method analytical testing per batch

3. Quality by Design¶

RPL Peptide's quality system incorporates quality-by-design principles, including raw material qualification, process validation, in-process controls, final product testing, and stability monitoring.

4. Documentation and Support¶

Each shipment includes Certificate of Analysis with batch-specific data, HPLC chromatogram, LC-MS data, Safety Data Sheet, and product specification document.

5. Regulatory and Ethical Considerations¶

AOD9604 is manufactured and supplied exclusively for laboratory research use. It is not intended for human or veterinary administration, therapeutic use, or diagnostic applications.

Chapter 14: Technical Bulletin¶

Official Technical Documentation

Technical Bulletin

Bulletin No.: RPL-TB-001-001
Date: July 2026
Subject: Handling and Quality Considerations for AOD9604

1. Purpose¶

This technical bulletin provides supplementary information on the proper handling, storage, and quality assurance of AOD9604 for laboratory research.

2. Quality Considerations¶

2.1 Batch Variability¶

While RPL Peptide maintains strict quality control, minor batch-to-batch variation in the following parameters may occur:

Peptide content (within 70–90% specification)
Residual TFA/counterion content
Trace moisture levels

2.2 Purity Profiles¶

All batches meet ≥98% HPLC purity. The impurity profile typically consists of truncated sequences, oxidation products, and deletion sequences.

3. Common Challenges and Solutions¶

Challenge	Solution
Slow dissolution	Allow longer equilibration time; gently warm to 25°C
Cloudy solution	Filter through 0.22 μm filter; check pH compatibility
Loss of activity	Verify storage temperature; use fresh aliquots
Precipitation	Dilute further; check buffer compatibility

4. Contact Information¶

For technical inquiries regarding this bulletin:

RPL Peptide Quality Department
Website: www.rplpeptides.com

Chapter 15: Application Notes¶

Official Technical Documentation

Application Note

1. Introduction¶

This application note provides standardized protocols for using AOD9604 in common in vitro research applications. These protocols are intended as starting points; optimization for specific cell types and experimental conditions may be required.

2. Preparation of Stock Solutions¶

2.1 Materials Required¶

AOD9604 (lyophilized powder)
Sterile water for injection (WFI) or PBS (pH 7.4)
Low-binding microcentrifuge tubes
Analytical balance (precision ±0.01 mg)
pH meter (calibrated)

2.2 Stock Solution Preparation¶

Step	Action	Notes
1	Equilibrate lyophilized product to room temperature (15–30 min)	Prevents moisture condensation
2	Reconstitute in appropriate volume of WFI or PBS	Calculate for target stock concentration
3	Gently swirl or invert to dissolve	Do NOT vortex — causes aggregation
4	Visually inspect for complete dissolution	Clear, no particulates
5	Aliquot into single-use tubes	Avoid repeated freeze-thaw
6	Store at -20°C	Stable up to 6 months

2.3 Concentration Calculation¶

Stock Concentration (M) = Mass (mg) / [Molecular Weight (g/mol) × Volume (L)]

3. Cell-Based Functional Assay Protocol¶

3.1 Materials Required¶

AOD9604 (reconstituted stock solution)
Appropriate cell line expressing target receptor/pathway
Cell culture medium (serum-free for treatments)
96-well or 384-well culture plates
Assay detection kit
Microplate reader
Positive and vehicle controls

3.2 Cell Preparation¶

Step	Action	Duration
1	Culture cells to 70–80% confluence	2–3 days
2	Serum-starve overnight before assay	16–18 h
3	Harvest and count cells	5 min
4	Resuspend in assay buffer	—
5	Seed at 5,000–10,000 cells/well	15 min
6	Equilibrate	30 min

3.3 Compound Treatment¶

Step	Action	Detail
1	Prepare serial dilutions of AOD9604	10⁻¹² to 10⁻⁶ M, 10-fold steps
2	Add 50 µL per well	Triplicate per concentration
3	Incubate for 30 min	Optimize per assay
4	Stop reaction	Per kit instructions
5	Measure endpoint	Within specified time window

3.4 Data Analysis¶

Parameter	Software	Model
EC₅₀ / IC₅₀	GraphPad Prism	Log(agonist) vs. response — variable slope
Statistics	GraphPad Prism	ANOVA with post-hoc test
Z' factor	Manual	Z' = 1 − [3(SD₊ + SD₋) /

3.5 Quality Control Criteria¶

Parameter	Acceptance
Z' factor	> 0.5 (acceptable); > 0.7 (excellent)
Positive control EC₅₀	Within ±0.5 log of historical mean
Vehicle control	No significant signal above baseline
CV (triplicates)	< 15%

4. Troubleshooting¶

Problem	Cause	Solution
High baseline	Vehicle interference	Reduce DMSO ≤0.1%; use PBS vehicle
No dose-response	Compound degradation	Verify storage; use fresh aliquot
	Incubation too short	Extend 30→60 min
High variability	Poor cell seeding	Pre-coat plates with poly-D-lysine
EC₅₀ shift	Serum interference	Ensure complete serum removal

5. Notes and Considerations¶

Include positive and negative controls in every experiment
Use low-binding tubes and tips
Prepare fresh stock or use single-use aliquots
Triplicate, repeat ≥3 independent times
Record batch numbers for compound, cells, and reagents

Chapter 16: FAQ Library¶

Official Technical Documentation

FAQ Library

Product Information¶

1. What is AOD9604?¶

AOD9604 is a Synthetic peptide, HGH Fragment 176-191 manufactured by RPL Peptide as a research-grade material for laboratory use only.

2. What is the molecular weight and CAS number?¶

Refer to the Technical Data Sheet for the most current molecular weight and CAS number information for this product.

3. What purity does RPL Peptide supply?¶

RPL Peptide supplies AOD9604 at ≥98% as determined by HPLC analysis at 214 nm. Batch-specific purity is provided on the Certificate of Analysis.

Quality and Documentation¶

4. What documentation is included with each shipment?¶

Each shipment includes a Certificate of Analysis (COA), HPLC chromatogram, LC-MS data, and Safety Data Sheet (SDS).

5. Does RPL Peptide provide batch-specific data?¶

Yes. Each batch is individually tested and documented with batch-specific COA, HPLC chromatogram, and LC-MS data.

6. How does RPL Peptide ensure batch-to-batch consistency?¶

RPL Peptide maintains strict quality control with defined specifications for each quality parameter. All batches must meet the same release criteria, and deviations are investigated through the CAPA system.

7. What is the difference between peptide content and HPLC purity?¶

HPLC purity measures the percentage of the target compound peak area relative to all detected peaks. Peptide content measures the actual compound mass relative to the total lyophilized weight (which includes water, residual TFA, and counterions).

Handling and Usage¶

8. How should lyophilized AOD9604 be stored?¶

Store at -20°C, protected from light and moisture. Short-term storage at 2–8°C is acceptable for up to 12 months. Do not store at room temperature for extended periods.

9. What solvent should be used for reconstitution?¶

Sterile water-for-injection (WFI), PBS (pH 7.4), or 0.9% saline are recommended. The choice depends on the specific experimental requirements.

10. How long can reconstituted product be stored?¶

Reconstituted product is stable for up to 30 days at 2–8°C or up to 6 months at -20°C when properly aliquoted.

11. Can the product be vortexed?¶

No. Vortexing can cause aggregation. Gently swirl or invert to dissolve.

12. How many freeze-thaw cycles are acceptable?¶

We recommend no more than 3 freeze-thaw cycles. Aliquot into single-use portions to avoid repeated freeze-thaw.

13. What if the product does not dissolve completely?¶

(1) Allow more time — some compounds need 15–30 min. (2) Gently warm to 25°C. (3) Add 0.1% DMSO or acetic acid if compatible with downstream application.

14. Recommended concentration for cell-based assays?¶

Typical working concentrations: 1 nM to 10 µM. A full dose-response curve (8–10 points, half-log dilutions) is recommended.

Technical¶

15. How does AOD9604 compare to other compounds in its class?¶

As a Synthetic peptide, HGH Fragment 176-191 |, AOD9604 has specific structural and functional characteristics that distinguish it. For comparative data, contact RPL Peptide's technical support.

16. Key analytical methods used?¶

HPLC (purity and impurity profile), LC-MS (identity confirmation), amino acid analysis (if applicable), water content (Karl Fischer), endotoxin (LAL assay).

17. How to avoid aggregation during experiments?¶

(1) Avoid vortexing. (2) Filter buffers (0.22 µm). (3) Keep stock on ice. (4) Use low-binding plasticware. (5) Add compound to buffer, not buffer to compound.

18. Can AOD9604 be used in animal studies?¶

For laboratory research use only. In vivo use requires IACUC approval and applicable regulatory compliance.

19. Shipping conditions?¶

Standard: dry ice or ice packs depending on product stability profile. All shipments include temperature monitoring indicators.

20. Where to find more information?¶

Additional information in the Technical Data Sheet, White Paper, and Application Notes. For specific inquiries: www.rplpeptides.com.

Chapter 17: Peptide Glossary¶

Official Technical Documentation

Peptide Glossary

A¶

Amino Acid Analysis (AAA) — A method for determining the amino acid composition of a peptide by complete hydrolysis followed by chromatographic separation and quantification.

Amidation — A C-terminal modification where the carboxyl group is converted to an amide (-CONH₂), often improving stability and bioactivity.

B¶

Batch (Lot) — A specific quantity of material produced in a single manufacturing run under consistent conditions.

Bioassay — A method for determining the biological activity of a compound using living cells or organisms.

C¶

Certificate of Analysis (COA) — An official document listing the analytical results for a specific batch, including test parameters, specifications, and measured values.

C18 Column — The most common reversed-phase HPLC column, featuring octadecyl (C18) bonded silica for peptide separation.

Counterion — An ion of opposite charge associated with the peptide (commonly TFA⁻ or acetate⁻) that affects the total mass and solubility properties.

D¶

Deletion Sequence — An impurity where one or more amino acids are missing from the target sequence due to incomplete coupling during SPPS.

DMSO (Dimethyl Sulfoxide) — A polar aprotic solvent commonly used to dissolve hydrophobic compounds for cell-based assays. Use at ≤0.1% final concentration to avoid cytotoxicity.

E¶

Endotoxin — Lipopolysaccharide (LPS) components from Gram-negative bacterial cell walls. Measured by LAL (Limulus Amebocyte Lysate) assay to ensure safety.

ESI (Electrospray Ionization) — A soft ionization technique for mass spectrometry that produces multiply charged ions from solution-phase samples.

F¶

Fmoc Chemistry — A synthesis strategy using 9-fluorenylmethoxycarbonyl (Fmoc) as the temporary N-terminal protecting group in SPPS.

Freeze-Thaw Cycle — The process of freezing and thawing a sample. Repeated cycles can cause peptide degradation and aggregation.

G¶

GHS (Globally Harmonized System) — An international system for classifying and labeling chemicals based on their hazards.

Gradient (HPLC) — A solvent programming method where the mobile phase composition changes over time to achieve separation.

H¶

HPLC (High-Performance Liquid Chromatography) — A chromatographic technique used to separate, identify, and quantify components in a mixture.

Half-Life Extension — Strategies (PEGylation, fusion proteins, etc.) used to prolong the circulating half-life of peptides and proteins.

I¶

Impurity Profile — The complete characterization of all substances other than the target peptide in a sample.

Incretin — A hormone that stimulates insulin secretion in response to nutrient intake. GIP and GLP-1 are the primary incretin hormones.

K¶

Karl Fischer Titration — A method for determining water content in samples using coulometric or volumetric titration.

L¶

LC-MS (Liquid Chromatography-Mass Spectrometry) — A hyphenated technique combining HPLC separation with mass spectrometric detection.

Lyophilization — A freeze-drying process that removes water from frozen material under vacuum, producing a stable powder with extended shelf life.

M¶

Mass Accuracy — The difference between measured and calculated mass, typically expressed in Da or ppm.

MALDI-TOF (Matrix-Assisted Laser Desorption/Ionization Time-of-Flight) — A mass spectrometry technique for peptide and protein analysis.

Monoisotopic Mass — The mass calculated using the most abundant isotope of each element.

N¶

Ninhydrin Test — A colorimetric test for free amino groups, used in SPPS to monitor coupling efficiency (Kaiser test).

O¶

Oxidation — A degradation pathway where amino acid side chains (Met, Cys, Trp) react with oxygen.

Orthogonal Protection — A protection strategy using two or more independently removable protecting groups.

P¶

Peptide Bond — An amide bond formed between the carboxyl group of one amino acid and the amino group of another.

Peptide Content — The percentage of the desired peptide in relation to all peptide-related components. Determined by HPLC or AAA.

pI (Isoelectric Point) — The pH at which a peptide has no net electrical charge, affecting solubility and purification behavior.

R¶

Reconstitution — The process of dissolving lyophilized peptide in a suitable solvent for research use.

Reversed-Phase HPLC — The most common HPLC mode for peptide analysis, using a non-polar stationary phase (C18) and polar mobile phases (water/acetonitrile with TFA).

RP-HPLC (Reversed-Phase High-Performance Liquid Chromatography) — The standard method for peptide purity analysis and preparative purification.

S¶

SPPS (Solid-Phase Peptide Synthesis) — A method for chemical synthesis of peptides where amino acids are sequentially coupled to a solid resin support.

Sequence (Amino Acid Sequence) — The linear order of amino acids in a peptide, which determines its three-dimensional structure and biological function.

T¶

TFA (Trifluoroacetic Acid) — A strong acid commonly used as an ion-pairing agent in HPLC mobile phases and present as a residual counterion in lyophilized peptides.

Truncation — An impurity resulting from incomplete chain assembly during synthesis, producing shorter peptide fragments.

U¶

UPLC (Ultra-Performance Liquid Chromatography) — A high-resolution variant of HPLC using sub-2 µm particle columns for faster, more efficient separations.

V¶

Validation (Method) — The process of demonstrating that an analytical method is suitable for its intended purpose, as defined by ICH Q2(R1).

W¶

Water Content — The percentage of water in a lyophilized peptide product, measured by Karl Fischer titration. Typically <5% for stable products.

Z¶

Z' Factor — A statistical measure of assay quality in high-throughput screening.

Technical Evidence¶

Scope note: This module separates what is directly documented in this manual, what is batch dependent, what is literature-derived, what is manufacturer specification, and what requires independent verification. Representative / reference information only — batch-specific analytical data are available on the applicable COA.

What is directly documented: The specification tables, analytical methods, safety data, and handling guides in Chapters 1–12 are directly documented for this product.
What is batch dependent: Peptide content, residual TFA/counterion content, trace moisture, and impurity profile vary by batch; the batch-specific values are issued on the applicable COA.
What is literature-derived: The human growth hormone fragment background and research-application context summarized in Chapters 13–15 are drawn from published scientific literature, not from manufacturer testing.
What is manufacturer specification: Purity targets, packaging configuration, storage conditions, and reconstitution parameters are manufacturer specifications for laboratory handling rather than experimental results.
What requires independent verification: Received-lot identity, purity, and stability should be independently verified by the receiving laboratory (for example, by in-house HPLC/LC-MS); this manual claims no third-party verification of product data.

AOD9604 Peptide Profile | Modified hGH Fragment Research — research profile of this peptide in the RPL Peptide research library.
RPL Peptide Research Knowledge Center — no separate topic page was identified for this fragment; the knowledge center home lists related peptide and analytical topics.

Related research pages are maintained separately from this technical manual and are provided for scientific context only.

Chapter 18: Documentation Policy¶

Official Technical Documentation

Documentation Policy

Policy No.: RPL-DP-001
Effective Date: July 2026
Version: 1.0

1. Purpose¶

This policy defines the structure, content standards, revision control, and distribution guidelines for the RPL Peptide Official Technical Documentation series.

2. Scope¶

This policy applies to all official technical documentation published by RPL Peptide, including Technical Data Sheets, Certificates of Analysis, Product Specifications, Safety Data Sheets, HPLC and Mass Spectra Libraries, all guides, Analytical Methods, Quality Standards, White Papers, Technical Bulletins, Application Notes, FAQ Library, and Peptide Glossary.

3. Document Structure Standards¶

All official technical documents must include: Official Technical Documentation header followed by document type.

4. Version Control¶

Element	Requirement
Version Number	X.Y format (X = major, Y = minor)
Review Frequency	Annually, or upon significant change
Archiving	Previous versions retained for audit trail

5. Document Review and Approval¶

Role	Responsibility
Author	Draft document; ensure technical accuracy
Technical Reviewer	Verify content and methodology
Quality Reviewer	Ensure compliance with standards
Approver	Final sign-off for publication

6. Distribution¶

Document Type	Distribution
Technical Data Sheets	Public — available on website
COA	Per batch — included with shipment
Guides	Public — available on website
White Papers	Public — available on website

7. Document Retention¶

Document Type	Retention Period
COA	5+ years
Batch Records	5+ years
Stability Data	Product shelf life + 2 years

Document Revision History¶

Version	Date	Author	Changes
1.0	July 2026	RPL Peptide Quality	Initial release

Official Technical Documentation

rplpeptides.com

AOD9604 Technical Manual¶

Peptide Identity¶

Related Product Entity¶

Table of Contents¶

Chapter 1: Technical Data Sheet¶

Product Overview¶

Product Specifications¶

Molecular Characteristics¶

Quality Assurance¶

Reconstitution Protocol¶

Regulatory Disclaimer¶

Chapter 2: Certificates of Analysis¶

Certificate of Analysis Template¶

Analytical Results¶

System Suitability¶

QC Review¶

Notes¶

Chapter 3: Product Specifications¶

General Information¶

Physical Properties¶

Purity and Quality Specifications¶

Packaging Specifications¶

Storage and Shipping¶

Regulatory Classification¶

Chapter 4: Safety Data Sheet¶

SECTION 1: Identification¶

SECTION 2: Hazard(s) Identification¶

SECTION 3: Composition / Information on Ingredients¶

SECTION 4: First Aid Measures¶

SECTION 5: Firefighting Measures¶

SECTION 6: Accidental Release Measures¶

SECTION 7: Handling and Storage¶

SECTION 8: Exposure Controls / Personal Protection¶

SECTION 9: Physical and Chemical Properties¶

SECTION 10: Stability and Reactivity¶

SECTION 11: Toxicological Information¶

SECTION 12: Ecological Information¶

SECTION 13: Disposal Considerations¶

SECTION 14: Transport Information¶

SECTION 15: Regulatory Information¶

SECTION 16: Other Information¶

Chapter 5: HPLC Library¶

Analytical Method¶

System Suitability Criteria¶

Acceptance Criteria¶

Peak Identification¶

Notes¶

Chapter 6: Mass Spectra Library¶

Analytical Method¶

System Suitability Criteria¶

Acceptance Criteria¶

Batch-Specific Data¶

Notes¶

Chapter 7: Storage Guide¶

Recommended Storage Conditions¶

Short-Term Storage¶

Long-Term Storage¶

Reconstituted Product Storage¶

Critical Storage Rules¶

Chapter 8: Solubility Guide¶

Solubility Data¶

Solubilization Protocol¶

Chapter 9: Reconstitution Guide¶

Reconstitution Protocol¶

Reconstitution Volume Guide¶

Best Practices¶

Chapter 10: Stability Guide¶

Stability Summary¶

Degradation Indicators¶

Chapter 11: Analytical Methods¶

Method Overview¶

1. HPLC Method (Purity Analysis)¶

2. LC-MS Method (Identity Confirmation)¶

3. Karl Fischer Method (Water Content)¶

4. LAL Endotoxin Testing¶

Chapter 12: Quality Standards¶

Quality Policy¶

Manufacturing Standards¶

Analytical Specifications¶

Chapter 13: White Paper¶