RPL Peptide
Official Technical Documentation
Analytical Methods
Analytical Methods — Retatrutide¶
Method Overview¶
| Method | Purpose | Specification |
|---|---|---|
| HPLC | Purity Analysis | ≥99.0% |
| LC-MS | Identity Confirmation | ±0.5 Da |
| Karl Fischer | Water Content | <5.0% |
| LAL Test | Endotoxin | <5 EU/mg |
1. HPLC Method¶
| Parameter | Specification |
|---|---|
| Column | C18, 4.6 × 250 mm, 5 μm |
| Detection | UV at 214 nm |
| Mobile Phase | 0.1% TFA in H₂O / ACN |
| Gradient | 20–60% B, 30 min |
| Flow Rate | 1.0 mL/min |
2. LC-MS Method¶
| Parameter | Specification |
|---|---|
| Ionization | ESI, Positive Mode |
| Mass Accuracy | ±0.5 Da |
| Scan Range | m/z 500–2500 |
3. Karl Fischer (KF)¶
- Coulometric titration
- Acceptance: <5.0%
4. LAL Endotoxin¶
- Kinetic Turbidimetric
- Acceptance: <5 EU/mg
Document Control¶
| Version | Date | Author |
|---|---|---|
| 1.0 | July 2026 | RPL Peptide Quality |
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Official Technical Documentation
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