Research notes from the lab.
In-depth articles on peptide handling, certificate-of-analysis interpretation, sourcing transparency, and the regulatory framework that defines RUO research-peptide commerce. Written for working scientists by working scientists.
How to read a Certificate of Analysis
HPLC chromatograms, mass-spec peaks, endotoxin LAL values, residual solvents — what each section of a CoA actually tells you, and what a good lot vs a bad lot looks like in practice.
Peptide storage and stability
Lyophilised stability at -20°C, reconstituted shelf-life in BAC water, freeze-thaw degradation, and what cold-chain shipping actually does (and doesn't) protect against.
RUO vs RX: what's the difference
Why research-use-only peptides sit in a regulatory grey zone that is neither pharmaceutical nor food, what FDA 21 CFR 809 actually says, and what a qualified researcher is.
Sourcing peptides from China: a buyer's guide
How to evaluate Chinese synthesis facilities — SPPS capacity, ISO certification, GMP alignment, IP rights, and the difference between a synthesis house and a relabeler.
Tirzepatide vs Semaglutide vs Retatrutide
Side-by-side comparison of the three leading incretin-class research peptides: receptor selectivity, mechanism, half-life, and trial outcomes.
BPC-157 vs TB-500 vs GHK-Cu vs KPV
Four regenerative peptides compared: source, mechanism, primary research use, oral bioavailability, and WADA status for athletes.
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