Research Peptide Education

A practical documentation, verification, and research-context guide for research buyers. This article is a documentation guide. It covers chemical identity, what a MOTS-C Certificate of Analysis (COA) should contain, how

MOTS-C is a 16-residue mitochondrial-derived peptide. Its sequence carries two methionines and a tryptophan, which makes oxidation the impurity to look for. Here is the identity data and what a good certificate should show.

KPV is three amino acids long, which makes its certificate harder to read than most, not easier. What the molecule is, what its COA should say, and where the published literature actually stops.

BPC-157 has one sequence and one CAS number. TB-500 is sold as two different molecules under one name. How to tell which you have, and what a good blend certificate shows.

SS-31, also called elamipretide or MTP-131, is a mitochondria-targeted research tetrapeptide. What it is, why its structure matters, and what to check on a COA before sourcing it.

How long a research peptide stays usable depends less on a date on a label and more on the form it is in and how it is stored. Here is

Purity and identity get most of the attention on a Certificate of Analysis, but a thorough COA often includes one more quality measure: endotoxin testing. Here is what endotoxins are,

Purity is one of the most important numbers on a research peptide’s Certificate of Analysis, and one of the most misunderstood. Here is what purity actually measures, how laboratories determine

New to research peptides, or just want a quick reference? This glossary defines the terms you will see most often on product pages, Certificates of Analysis, and lab documentation. Every

When you are sourcing research peptides, country of origin is easy to overlook and surprisingly important. “Made in the USA” is more than a label, and in the United States