Description: Peptide to Papain Substrate Colorimetric Form: Lyophilized powder Alternative Names: AC-PHE-GLY-PNACAS Number : 34336-99-7Molecular Formula : C19H20N4O5Molecular Weight : 384.4Purity : > 95%Chemical Structure : Ac-Phe-Gly-pNAStorage/Stability : Shipped at 4°C. Store at -20°C for one year.