Decoding MOTS-c Quality Reports
An HPLC report showing 99% purity for MOTS-c looks impressive, but without understanding what each analytical method actually measures, you’re taking the number at face value. Here’s what each test really tells you — and what it doesn’t.
Quality documentation is the backbone of any research peptide purchase. But not all documentation is created equal. A 99% purity claim without specifying the analytical method is essentially meaningless.
HPLC: The Industry Standard
High-Performance Liquid Chromatography separates and quantifies the components in a peptide sample. A single sharp peak at the expected retention time with 98%+ area under the curve indicates a pure sample. Multiple peaks or a broad, irregular main peak suggest impurities or degradation.
Mass Spectrometry: Identity Confirmation
Mass Spec confirms the molecular weight of your peptide matches the theoretical mass calculated from its amino acid sequence. This is critical — HPLC tells you purity, but MS tells you whether you actually have MOTS-c or a similar but incorrect compound.
Amino Acid Analysis: Sequence Verification
AAA breaks down the peptide into its constituent amino acids and verifies they’re present in the correct ratios. This catches synthesis errors where one amino acid was substituted for another during production.
FAQ
Which quality test is most important for MOTS-c?
All three — HPLC, MS, and AAA — serve different purposes and none is sufficient alone. HPLC verifies purity, MS confirms identity, and AAA checks sequence accuracy. A supplier providing all three demonstrates serious quality commitment.
What if the supplier only provides a COA without raw data?
A COA without the underlying analytical data (chromatograms, spectra) is insufficient for rigorous research quality control. Request the full analytical package, including raw instrument output.
Quality documentation separates professional suppliers from middlemen. Always request the full analytical package.
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