Dnp-RPLALWRS TFA is a fluorescent peptide substrate designed specifically for human matrilysin (MMP-7). Upon enzymatic cleavage at the alanine-leucine bond, the release of the Dnp group alleviates fluorescence quenching, enabling real-time quantitative analysis of MMP-7 activity by enhancing tryptophan emission. This compound offers a sensitive and efficient method for kinetic studies and inhibitor screening.