Prolyl Endopeptidase Inhibitor 1 is a potent inhibitor of prolyl endopeptidase (PEP; PE)(Ki : 15 nM) , has anti-amnesic effect.

BR102910 (4-Thiazolecarboxamide, N-[2-[(2S)-2-cyano-4,4-difluoro-1-pyrrolidinyl]-2-oxoethyl]-2-[(3,4-dichlorophenyl)methyl]-) is a selective inhibitor of fibroblast activated protein (FAP).

S 17092 (S 17092-1) is a highly effective inhibitor of cerebral prolyl-endopeptidase (PEP), displaying an IC50 value of 1.2 nM. It is utilized in research focused on understanding memory impairment and cognitive disorders associated with cerebral aging [1].

Z-Thioprolyl-Thiazolidine is a potent, specific inhibitor of bovine brain prolyl endopeptidase, demonstrating an inhibition constant (K i value) of 0.36 nM [1].

Z-Thioprolyl-Thioproline is a prolyl endopeptidase inhibitor derived from bovine brain, exhibiting inhibition constants of IC50 = 16 µM and Ki = 37 µM. This compound is utilized in the investigation of neurological disorders, including memory and cognitive disorders [1].

Z-Pro-prolinal (N-Benzyloxycarbonyl-L-prolyl-L-prolinal) serves as a specific and orally active inhibitor of prolyl endopeptidase (PREP), demonstrating an IC50 value of 0.4 nM against porcine PREP [1] [2] [3].

Z-Pro-Pro-aldehyde-dimethyl acetal is a potent prolyl endopeptidase (PREP) inhibitor, effectively impeding the activity of this cytoplasmic serine endoprotease with an IC50 of 12 nM. Its significance is underscored by its role in the modulation of cognitive dysfunction associated with aging and neurodegenerative conditions, such as Alzheimer's disease [1] [2].