Independently verified. Batch by batch.

A purity claim on a label is only meaningful if a second lab can confirm it. Here's exactly how we validate every peptide before releasing it for research orders.

1. 01
   Reverse-phase HPLC

   Each batch is analyzed by high-performance liquid chromatography to quantify peptide content and identify related impurities. Our release threshold is ≥ 98% for the primary peak.

2. 02
   Mass spectrometry

   ESI-MS confirms the observed molecular mass matches the theoretical MW of the target peptide sequence within ± 0.5 Da.

3. 03
   Endotoxin & appearance

   Visual inspection for lyophilized cake integrity plus LAL endotoxin testing where applicable to the compound class.

4. 04
   Batch record

   A batch record is generated with lot number, purity value, HPLC chromatogram, MS spectrum, and analyst signature — available on request.