Why Retatrutide Stability Matters
Retatrutide is a 39-amino acid peptide with a complex tertiary structure. Like all peptides, it is susceptible to degradation through hydrolysis, oxidation, and aggregation if not stored correctly. Degradation reduces purity and may produce impurities that affect product quality.
For B2B buyers and distributors, understanding Retatrutide stability requirements is essential for maintaining product quality through the supply chain and ensuring that the purity stated on the COA at the time of manufacture is preserved at the point of use.
Storage Conditions by Delivery Format
| Format | Recommended Storage | Notes |
|---|---|---|
| Lyophilized vial (sealed) | -20°C (long-term); 2–8°C (short-term) | Most stable format. Protect from light and moisture. Do not freeze-thaw repeatedly after reconstitution. |
| Lyophilized vial (reconstituted) | 2–8°C, use within 24–48 hours | Reconstituted solution is less stable than lyophilized powder. Use promptly after reconstitution. |
| Pre-filled pen (liquid) | 2–8°C | Keep refrigerated. Do not freeze. Protect from light. Check expiry date on label. |
| Dual-chamber cartridge (unmixed) | 2–8°C or as specified on COA | Lyophilized chamber provides extended stability. Mix only at point of use. |
| Bulk API (lyophilized) | -20°C or -80°C for long-term | Store in sealed, desiccated container. Avoid repeated temperature cycling. |
Factors Affecting Retatrutide Stability
Temperature
Elevated temperatures accelerate peptide hydrolysis and aggregation. Always store Retatrutide at the recommended temperature and avoid prolonged exposure to ambient conditions.
Moisture
Lyophilized peptides are hygroscopic. Exposure to moisture can cause clumping, reduced solubility, and accelerated degradation. Keep sealed until use.
Light
UV light can cause oxidation of susceptible amino acid residues. Store in opaque or amber containers and avoid prolonged light exposure.
pH
Peptide stability is pH-dependent. Reconstitute with the specified diluent at the recommended pH. Avoid extreme pH conditions.
Request Stability Documentation
Contact ShiLai™ Healthcare for batch-specific stability data, storage recommendations, and shelf life information for your order.
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