Quality Standards — Tirzepatide¶

Quality Policy¶

RPL Peptide is committed to supplying research-grade peptides that meet defined purity and quality specifications through standardized manufacturing, analytical verification, batch traceability, and continuous improvement.

Manufacturing Standards¶

Standard	Description
Peptide Synthesis	Solid-Phase Peptide Synthesis (SPPS) under controlled protocols
Batch Reproducibility	Standardized reaction conditions for batch-to-batch consistency
Purification	Preparative HPLC purification to target purity
Lyophilization	Controlled lyophilization under defined conditions
Packaging	Clean environment packaging with quality-controlled materials

Analytical Specifications¶

Parameter	Standard	Method
Purity	≥99.0%	HPLC at 214 nm
Identity	±0.5 Da	LC-MS
Water Content	<5.0%	Karl Fischer
Endotoxin	<5 EU/mg	LAL Test
Peptide Content	70–90%	UV / Amino Acid Analysis
Appearance	White to off-white powder	Visual

Batch Traceability¶

Every batch has a unique lot number linking:

Manufacturing Records — Synthesis parameters, raw material lots, equipment logs
Analytical Data — HPLC chromatograms, LC-MS spectra, KF results, LAL results
QC Review — Quality control assessment and disposition decision
COA Issuance — Certificate of Analysis generation and distribution
Shipment Records — Customer, quantity, date, and shipping conditions

This ensures full lifecycle traceability from raw material through final delivery.

Quality Control Process¶

graph LR
    A[Raw Materials] --> B[Synthesis SPPS]
    B --> C[Cleavage & Deprotection]
    C --> D[Prep-HPLC Purification]
    D --> E[Lyophilization]
    E --> F[QC Testing]
    F --> G{QC Review}
    G -->|Pass| H[COA & Release]
    G -->|Fail| I[Investigation]
    I --> D

Release Criteria¶

A batch is released only when ALL of the following criteria are met:

HPLC purity ≥99.0%
LC-MS identity confirmed (±0.5 Da)
Water content <5.0%
Endotoxin <5 EU/mg
Appearance conforms to specification
Documentation complete and reviewed

Continuous Improvement¶

RPL Peptide regularly reviews:

Quality Metrics — Batch pass rates, purity trends, impurity profiles
Customer Feedback — Quality-related communications and surveys
Analytical Data — Trend analysis of key quality parameters
Process Improvements — Opportunities for enhanced synthesis, purification, or testing

Documentation Standards¶

Document	Standard Content	Retention
Certificate of Analysis	Results, specifications, methods	5+ years
Batch Record	Full manufacturing history	5+ years
HPLC Chromatogram	Full chromatographic trace	5+ years
LC-MS Spectrum	Full mass spectrum	5+ years
Stability Data	Time-point results	Product shelf life + 2 years

Third-Party Validation¶

Third-party analytical validation available upon request
Independent laboratory testing can be arranged
Additional characterization (Amino Acid Analysis, peptide mapping) available

Compliance Framework¶

Area	Standard / Reference
Manufacturing	SPPS best practices, controlled protocols
Analytical	ICH Q2(R1) Method Validation Guidelines
Quality Systems	ISO 9001 principles
Safety	GHS Classification, Lab Safety Standards

Official Technical Documentation

rplpeptides.com