Filtered by mechanism, not marketing.

The Compound Library.

Every card shows its lot number and HPLC purity. Click any compound for the full batch passport and COA.

A Stack One peptide pen standing on a laboratory bench beside filling equipment
A research peptide vial backlit by an electric blue glow

Every pen. Every vial. Purity you can verify.

Batch number, tested purity, test date, and lab name—published for every compound we ship.

  • Research use only
  • COA verified
  • ISO/IEC 17025 labs