Off-white to yellow crystalline powder
H-L-Pro-pNA Trifluoracetate acts as a chromogenic substrate for prolyl aminopeptidase (proline iminopeptidase).
Proline p-nitroanilide (P-pNA) is a colorimetric substrate for prolyl aminopeptidase (proline iminopeptidase), an enzyme that releases proline from the N-terminus of small peptides.
