α-Phenyl-α-(2-pyridyl)acetonitrile

α-Phenyl-α-(2-pyridyl)acetonitrile (CAS No.: 5005-36-7) is a biologically relevant metabolite of the antigastrin compound SC-15396, generated through hepatic metabolism in rat liver homogenate systems, and is therefore primarily classified as a metabolite standard and mechanistic probe in gastrointestinal pharmacology research. As SC-15396 is known to inhibit gastric acid secretion via interference with gastrin-mediated pathways, this metabolite is closely associated with studies of gastrin receptor signaling and downstream regulatory mechanisms governing gastric acid production. Although it is not typically characterized as a direct pharmacological inhibitor, its structural and metabolic relationship to the parent antigastrin compound makes it a valuable tool for elucidating metabolic pathways, receptor interactions, and signal transduction processes involved in gastric secretion. In vitro investigations commonly employ this compound in cell-based assays to explore gastrin receptor activity and related intracellular signaling cascades, with observed biological effects generally assessed in the nanomolar to micromolar range depending on assay sensitivity and experimental design. It is also utilized in metabolic profiling and drug biotransformation studies to better understand the disposition and mechanism of action of antigastrin agents, with experimental concentrations tailored to specific model systems and research objectives.