CAS Registry Number

CAS 103476-89-7 — Leupeptin hemisulfate

Leupeptin hemisulfate is a serine protease inhibitor widely used in biochemical research to study protein degradation pathways and as a cell-permeable reagent in enzyme activity assays. This synthetic peptide analog effectively inhibits cysteine and serine proteases like trypsin, papain, and calpain. Leupeptin hemisulfate has a CAS number of 103476-89-7, with the molecular formula C20H38N6O4 · 0.5H2O4S and a molecular weight of 475.59. Store at -15 to -20°C for stability. The product carries a **Warning** signal word for safety handling. Molekula supplies Leupeptin hemisulfate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.