SP-13786
BR102910
Suc-Ala-Pro-pNA
Ala-Ala-βNA
Z-Pro-Pro-aldehyde-dimethyl acetal
Oroxylin A-7-O-glucuronide (Standard)
Z-321
Pramiracetam (Standard)
Prolyl endopeptidase inhibitor 2
ONO 1603
Y-29794 tosylate
S17092
JTP-4819
Y-29794
Z-Thioprolyl-Thioproline
Z-Thioprolyl-Thiazolidine
POP-IN-3
POP-IN-2
PREP inhibitor-1
Z-Gly-Pro-pNA