Exact Mass: 767.3312304000001

Exact Mass Matches: 767.3312304000001

Found 2 metabolites which its exact mass value is equals to given mass value 767.3312304000001, within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error 0.001 dalton.

Pentagastrin

(3S)-3-{[(2S)-1-hydroxy-2-{[(2S)-1-hydroxy-2-[(1-hydroxy-3-{[hydroxy(2-methylpropoxy)methylidene]amino}propylidene)amino]-3-(1H-indol-3-yl)propylidene]amino}-4-(methylsulphanyl)butylidene]amino}-3-{[(1S)-1-(C-hydroxycarbonimidoyl)-2-phenylethyl]-C-hydroxycarbonimidoyl}propanoic acid

C37H49N7O9S (767.3312304000001)

Pentagastrin is only found in individuals that have used or taken this drug. It is a synthetic pentapeptide that has effects like gastrin when given parenterally. It stimulates the secretion of gastric acid, pepsin, and intrinsic factor, and has been used as a diagnostic aid. [PubChem]The exact mechanism by which pentagastrin stimulates gastric acid, pepsin, and intrinsic factor secretion is unknown; however, since pentagastrin is an analogue of natural gastrin, it is believed that it excites the oxyntic cells of the stomach to secrete to their maximum capacity. Pentagastrin stimulates pancreatic secretion, especially when administered in large intramuscular doses. Pentagastrin also increases gastrointestinal motility by a direct effect on the intestinal smooth muscle. However, it delays gastric emptying time probably by stimulation of terminal antral contractions, which enhance retropulsion. Pentagastrin (ICI-50123) is a potent, selective Cholecystokinin B (CCKB) receptor antagonists with IC50 values of 11 nM and 1100 nM for CCKB and CCKA, respectively. Pentagastrin enhances gastric mucosal defense mechanisms against acid and protects the gastric mucosa from experimental injury[1].[2].

Pentagastrin

(3S)-3-{[(1S)-1-carbamoyl-2-phenylethyl]carbamoyl}-3-[(2S)-2-[(2S)-3-(1H-indol-3-yl)-2-(3-{[(2-methylpropoxy)carbonyl]amino}propanamido)propanamido]-4-(methylsulfanyl)butanamido]propanoic acid

C37H49N7O9S (767.3312304000001)

V - Various > V04 - Diagnostic agents > V04C - Other diagnostic agents > V04CG - Tests for gastric secretion D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones > D005755 - Gastrins Pentagastrin (ICI-50123) is a potent, selective Cholecystokinin B (CCKB) receptor antagonists with IC50 values of 11 nM and 1100 nM for CCKB and CCKA, respectively. Pentagastrin enhances gastric mucosal defense mechanisms against acid and protects the gastric mucosa from experimental injury[1].[2].