Molecular Weight: 598.71Salt Form: TFAPurity: >96%Sequence (3-letter): Ac-Lys-Pro-Arg-AMCSequence (1-letter): Ac-KPR-AMCStorage: -20 °C or belowAc-Lys-Pro-Arg-AMC is an fluorogenic substrate for Tryptase. Tryptases are granule derived serine proteases expressed in mast cells and basophils.Activity is quantified by release of free fluorescent 7-amino-4-methylcoumarin (AMC) which excites at 360-380 nm and emits at 440-460 nm.