L-Valine 7-Amido-4-methylcoumarin, Trifluoroacetate Salt is a Trifluoroacetate Salt form of (2S)-2-Amino-3-methyl-N-(4-methyl-2-oxo-2H-1-benzopyran-7-yl)butanamide (CAS 78682-66-3) which can be used in biological study of purification, characterization, cellular location, and tissue distribution of leucine aminopeptidase from the skeletal muscle of red sea bream Pagrus major.