Every peptide in the catalog clears three checks before it leaves our facility: supplier verification, independent batch HPLC, and physical COA enclosure with the shipment. No compromise on those three steps.
We work only with labs that have a documented history of solid-phase peptide synthesis (SPPS) and can provide MSDS, synthesis protocol, and characterization data. No anonymous Alibaba-style suppliers. Partners are re-audited on every new product introduction.
Before we accept a partner's shipment, an arbitrary vial is pulled and sent to an independent lab for analysis. HPLC reports area under the peak — above 98% purity is the floor. Below it, the batch is rejected outright, not discounted. The same workflow covers residual solvents (acetonitrile, TFA), peptide-related impurities, and identity confirmation via mass spectrometry.
The Certificate of Analysis travels with the parcel physically — not as a link in an email, not behind a QR code. That lets you verify the purity of the specific lot against an independent record that can't be quietly removed post-sale. All COAs are also archived in /coa-vault for long-term traceability.
Every vial is stamped with a batch ID tied to its COA in our internal system. Products are held at -20°C until pickup; shipments leave in insulated packaging with a temperature indicator for any transit window over 24 hours. Econt overnight inside Bulgaria, 24–72 hours across the rest of the EU.
We don't reformulate sub-spec batches — they go back into our partner's utilization or return cycle. We don't market "99%+ purity" without an HPLC chromatogram to back it. We don't accept additional certificates without independent verification. We don't recommend human use of peptides — they are research reagents.
HPLC measures purity by area under the peak — it doesn't reveal everything. We don't test for bacterial contamination ourselves (partners do at synthesis, but there's no public audit trail). We don't test each vial individually — one sample per batch. If HPLC area reads 98.2% with one unidentified impurity, we don't know what that impurity is. For higher-confidence work — for instance, an academic publication — you can request a pre-shipment sample for independent analysis against cost.
All our COAs are public in /coa-vault. Browse batches by product name, by date, by supplier. No login. No gate.
Open COA archive