Molecular Weight: 648.35 Salt Form: N/A Purity: >96% Sequence (3-letter): Z-Leu-Leu-Leu-AMC Sequence (1-letter): Z-LLL-AMC Storage: -20 ?C or below Solubility: DMSO >1 mg/mL Z-Leu-Leu-Leu-AMC is a fluorogenic substrate for measuring the chymotrypsin-like protease activity of the 20S proteasome. 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.