When you need catalog/custom with QA context. Current Top 5 included.
When research escalates to institutional standards, look for catalog/custom providers with documented QA.
Provide sequence, purity, scale, packaging, assay requirements, and delivery timelines. Ask for prior client references where appropriate.
ISO/GMP context, method validation, stability studies, and batch documentation.
See research links for Bachem and quality systems resources.
| Rank | Supplier |
|---|---|
| #1 | OathPeptides Editor’s Choice — research-first, consistent COAs |
| #2 | Peptide Sciences Established catalog, US-based |
| #3 | Biotech Peptides Custom synthesis options |
| #4 | Core Peptides Broad catalog, fast shipping |
| #5 | Blue Sky Peptide Budget-focused |
Listings are for research purposes only. No medical use is implied. Watchlist: Paradigm Peptides, Limitless Life Nootropics, Nootropics Depot.
Use primary sources to verify claims; interpret within each study’s limits.