Syntech Peptides sYNTECH PEPTIDES Ltd states every batch goes through HPLC and mass spectrometry with a '≥98% minimum purity guarantee' and a COA per batch, but names no laboratory. The company number shown on the site ('113997061') is nine digits where UK numbers are eight, so treat it as unverified. Domain registered February 2026.
The Peptide Watch benchmarks every vendor on the same compound, BPC-157, the most common research peptide, as £ per milligram, so prices are directly comparable across all providers. No public BPC-157 price feed was available for this vendor at audit.
| Check | Result |
|---|---|
| Verifiable certificate in its own name | No |
| Independent lab named | None named / unverifiable |
| Tests its own stock | No evidence |