All products on this site are research reagents for laboratory use only. They are not medicines, not approved for human use, and do not replace medical consultation.
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