Verified — all release criteria met
released
Certificate of analysis
MOTS-c
Lot CP-MOTSC-2605B · 20 mg
98.75 %
HPLC purity
Spec ≥ 98.0 %
87.6 %
Net peptide content
By amino acid analysis
< 0.28
Endotoxin (EU/mg)
Spec < 5.0 EU/mg
Provenance
- Testing laboratory
- Colmaric Analyticals
- Accreditation
- ISO/IEC 17025:2017
- Country of synthesis
- United States
- Manufactured
- May 12, 2026
- Release tested
- May 21, 2026 (4 months ago)
- Retest date
- May 11, 2028
- CAS number
- 1627580-64-6
- Molecular formula
- C101H152N28O22S2
- Theoretical mass
- 2174.60 Da
- Observed mass (LC-MS)
- 2174.68 Da (Δ 0.08 Da)
Assay results
Every line the release panel ran for this lot, with the method, the acceptance criterion and the measured value — not a pass mark alone.
| Method | Parameter | Specification | Result | |
|---|---|---|---|---|
| RP-HPLC (UV 214 nm) | Purity (area %) | ≥ 98.0 % | 98.75 % | Pass |
| LC-MS (ESI+) | Identity — observed mass | 2174.60 ± 1.0 Da | 2174.68 Da | Pass |
| Amino acid analysis | Net peptide content | ≥ 80.0 % | 87.6 % | Pass |
| Karl Fischer | Water content | ≤ 8.0 % | 1.86 % | Pass |
| Ion chromatography | Residual TFA | ≤ 1.0 % | 0.11 % | Pass |
| LAL kinetic chromogenic | Bacterial endotoxin | < 5.0 EU/mg | < 0.28 EU/mg | Pass |
| USP <71> membrane filtration | Sterility | No growth | No growth | Pass |
| Visual / USP <790> | Appearance | White to off-white cake, free of visible particulates | Conforms | Pass |
Sequence
H-Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg-OH
Handling for this lot
- Appearance
- White lyophilised powder
- Storage
- -20 °C lyophilised, protected from light
- Reconstitution
- Two methionine residues make this sequence oxidation-prone. Minimise headspace air on stored stock.
Other lots of MOTS-c
Compare batch to batch. Consistency across lots is a stronger signal than any single certificate.
Research use only. This certificate describes material supplied strictly for laboratory research. It is not a drug, food, cosmetic or medical device, has not been evaluated by the FDA, and is not intended for human or veterinary administration of any kind.