Fluorogenic substrate specific for cathepsin K, among other cathepsin family members. This substrate is also cleaved by granzyme A, thrombin, tryptase, trypsin, and kallikreins. Ex.: 365 nm, Em.: 440 nm, although the following Ex/Em can also be used: 355,380/450,460. This substrate is useful for inhibitor screening and kinetic analysis. Also available: fluorogenic calibration standard AMC (BML-KI144). Alternative name: Z-Gly-Pro-Arg-AMC. Purity: ≥97% (HPLC). Formulation: C31H37N7O7. Long Term Storage: -20°C.