Z-FR-AMC is a substrate for serine proteases, including cathepsins, kallikrein and plasmin. λEx/λEm of substrate = 330/390 nm (weak fluorescence) λEx/λEm of end product (AMC) = 342/441 nm (strong fluorescence) Off-white solid soluble in DMSO Store at 4°C and protect from light C33H37ClN6O6 MW: 649.14