COAs Available Suppliers

Batch-specific Certificates of Analysis (COA) documenting analytical test results for each production lot. A comprehensive COA for peptide products should include product identification and lot number, manufacturing date, HPLC chromatogram with retention time and purity percentage, mass spectrometry confirmation of molecular weight, peptide content percentage, counter-ion content (typically TFA or acetate), appearance description, solubility data, storage conditions, and retest or expiry date. COA documentation enables buyers to verify lot-to-lot consistency and confirm identity and purity before purchase. Per EMA's June 2026 synthetic peptide guideline, impurity reporting thresholds for drug-grade peptide APIs have been set at 0.1%, with all related substances above this level requiring identification and quantification. Showing 186 verified suppliers matching this quality standard.