BZAR (Rhodamine 110, bis-(N-CBZ-L-arginine amide), dihydrochloride) is a substrate for serine proteases and is also an inhibitor for quanidinobenzoatase. It is 50 to 100 times more sensitive than the AMC-based substrate. λ Ex/λ Em of end product (R110) = 496/520 nm Off-white to pink solid soluble in DMSO Store at 4°C and protect from light C48H52Cl2N10O9 MW: 983.91