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Y-29794 Tosylate (Y-29794) is an orally active, effective, and specific non-peptide-prolyl endopeptidase (PPCE) inhibitor.

Z-Pro-Pro-CHO acts as a prolyl oligopeptidase inhibitor with half-maximal inhibitory concentrations (IC50) of 0.16 μM for human prolyl oligopeptidase and 0.01 μM for Schistosoma mansoni prolyl oligopeptidase [1].

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 lies in its role in modulating cognitive dysfunction associated with aging and neurodegenerative conditions, such as Alzheimer's disease [1] [2].

PREP inhibitor-1 is a prolyl oligopeptidase (PREP) inhibitor for the study of Alzheimer's disease.

Aprepitant is a Substance P Neurokinin-1 Receptor Antagonist. The mechanism of action of aprepitant is as a Neurokinin 1 Antagonist, and Cytochrome P450 3A4 Inhibitor, and Cytochrome P450 2C9 Inducer, and Cytochrome P450 3A4 Inducer.

gamma-preprotachykinin amide (72-92) acetate is a 21 amino acid peptide belonging to the tachykinin (TK) family and including neurokinin A (NKA) in its C-terminal sequence. gamma-preprotachykinin amide (72-92) acetate possesses higher affinity than NKA for central NK-2 receptors; it shows lower affinity for NK-1 receptors, however, it potently stimulates salivary secretion, which is mediated by NK-1 receptor activation.

Fosaprepitant dimeglumine (MK-0517) is the dimeglumine salt form of fosaprepitant, a water-soluble, N-phosphorylated prodrug of aprepitant with antiemetic activity. Upon intravenous administration and rapid conversion to aprepitant, this agent selectively binds to human substance P neurokinin 1 (NK1) receptors in the central nervous system (CNS), inhibiting receptor binding of endogenous substance P and preventing substance P-induced emesis.

Prepro-ANF (56-92), human, a precursor to the human atrial natriuretic factor, activates guanylate cyclase by specifically enhancing particulate guanylate cyclase activity within the renal membrane and unit [1].

Prepro-TRH-(160-169), a connecting peptide of the thyrotropin-releasing hormone prohormone (pro-TRH), enhances TRH-induced thyrotropin (TSH) release [1].

Preptin, an osteogenic peptide derived from pancreatic beta-cells, spans amino acids Asp 69 to Leu 102 within pro-IGF-II [1].

Prepro-Atrial Natriuretic Factor (26-55) (human) is a polypeptide that increases cyclic GMP levels in the renal cortex and medulla, and enhances renal guanylate cyclase activity [1].

gamma-preprotachykinin amide (72-92) is a useful organic compound for research related to life sciences. The catalog number is T9417 and the CAS number is 114882-65-4.

rac-Aprepitant-d4 (enantiomer) is a deuterated compound of rac-Aprepitant. rac-Aprepitant has a CAS number of 170729-80-3.

Fosaprepitant-d4 Dimeglumine is a deuterated compound of Fosaprepitant Dimeglumine. Fosaprepitant Dimeglumine has a CAS number of 265121-04-8. Fosaprepitant Dimeglumine is the dimeglumine salt form of fosaprepitant, the water-soluble, N-phosphorylated prodrug of aprepitant, with antiemetic activity. Upon intravenous administration and rapid conversion to aprepitant, this agent binds selectively to the human substance P neurokinin 1 (NK1) receptors in the central nervous system (CNS). This inhibits receptor binding of the endogenous substance P and prevents substance P-induced emesis.

Prepro VIP (111-122), human, is a peptide derived from prepro-vasoactive intestinal polypeptide (VIP), corresponding to residues 111-122.

Prepro VIP (111-122), human acetate is a prepro-vasoactive intestinal polypeptide (VIP)–derived peptide, corresponding to residues 111-122.

Prepro VIP (81-122), human, is a peptide derived from prepro-vasoactive intestinal polypeptide (VIP), corresponding to residues 81-122.

Preprosomatostatin (25-34) is a peptide.

Salidroside is a bioactive phenolic glycoside compound isolated from Rhodiola rosea and is a prolyl endopeptidase inhibitor. Salidroside can alleviate cachexia symptoms in a tumor cachexia mouse model by activating mTOR signaling and protect dopaminergic neurons by enhancing PINK1 Parkin-mediated mitochondrial autophagy. Salidroside can also inhibit the growth of cancer cells by regulating the CDK4-cyclin D1 pathway to block the G1 phase and or regulating the Cdc2-cyclin B1 pathway to block the G2 phase.

Picromycin is a 14-membered macrolide antibiotic and Prolyl endopeptidase (PREP) inhibitor. Pikromycin shows activity against gram-positive bacteria including mycobacteria.

β-Elemonic Acid (3-Oxotirucallenoic Acid) exhibits anti-inflammatory effects. Beta-Elemonic acid inhibits proliferation by inducing hypoploid cells and cell apoptosis, the anticancer effects of beta-Elemonic acid are related to the MAPK signaling pathway, ROS activation and glutathione depletion in human A549 lung cancer cells. Beta-Elemonic acid exhibits prolyl endopeptidase inhibitory activities.

Oroxylin A-7-O-glucuronide (Oroxylin A Glucoronide) and wogonoside should also be served as the chemical markers together with baicalin for the quality control of herbs and proprietary traditional Chinese medicine (PTCM) products of radix Scutellariae. Oroxylin A 7-O-glucuronide, Oroxin A, and Oroxin B can bind to the stem region of α-hemolysin (α-HL), when inhibiting the hemolytic activity of α-HL. Oroxylin A 7-O-glucuronide and 4', 5, 7-trihydroxy-6-methoxyflavone at a concentration of 100 microM inhibit 34 and 43% of total prolyl oligopeptidase (POP) activity, respectively.

Y-29794 (Compound 2) is a potent, covalent inhibitor of prolyl oligopeptidase (POP) with a Ki of 0.95 nM, holding research value in neurodegenerative diseases and cancer.

BR103354 is a novel fibroblast activation protein (FAP) inhibitor with anti-diabetic and anti-steatotic effects. BR103354 inhibited FAP with an IC50 value of 14 nM, showing high selectivity against dipeptidyl peptidase (DPP)-related enzymes and prolyl oligopeptidase (PREP). BR103354 exhibited good pharmacokinetic properties as evidenced by oral bioavailability of 48.4% and minimal hERG inhibition. Single co-administration of BR103354 with hFGF21 reduced nonfasting blood glucose concentrations, in association with increased intact form of hFGF21 in ob ob mice. BR103354 acts as an effective FAP inhibitor in vitro and in vivo, thereby demonstrating its potential application as an anti-diabetic and anti-NASH agent.