Product Specification Alternative Name:Cathepsin S & L substrate (fluorogenic) Sequence:Z-Val-Val-Arg-AMC . HCl [Z=Cbz=Benzyloxycarbonyl; AMC=7-amino-4-methylcoumarin] MW:663.8 CAS:124485-41-2 Purity:≥99% (TLC) Appearance:Lyophilized solid. Solubility:Soluble in DMSO. Long Term Storage:-20°C Handling:Protect from light.