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Guides and compound sheets for laboratories and independent researchers who verify before they order. Everything here is descriptive: identity, specifications context, and how to read the paperwork. Nothing here is advice for human use.
Brant Bio is a United States supplier of research peptides for in-vitro laboratory work. We supply sourced finished labelled reagents, packaged and shipped from California. Every lot is tested by an independent US laboratory for RP-HPLC purity and ESI-MS identity, and the lot number on the vial matches that certificate. These pages describe identity and paperwork only. They are not medical advice, and nothing here is for human or veterinary use.
Brant supplies research peptides for in-vitro work only. For lot certificates, start at Certificates of Analysis. For how we test, see Third-Party Testing. For the full catalog identity table, see Compound Reference.
Guides
How to read a peptide COA
HPLC vs mass spectrometry, lot-number match, and red flags that mean you should ask for the certificate before you buy.
How to choose a US research peptide supplier
A practical checklist: independent COA, US lab testing, lot match on the vial, and packaging that preserves the reagent.
What “research use only (RUO)” means
RUO positioning in plain language—what Brant sells, what it does not claim, and why that boundary matters.
Storage and handling of lyophilized peptides
Lab storage and handling for sealed lyophilized vials. Not reconstitution protocols for human use.
Compound sheets
Identity and catalog context only. Each sheet links to the product page and the certificates library.
Quality & company
Research peptides. Purity you can verify.