Formulation: A crystalline solid
Formal Name: 3-[[[2-[(aminoiminomethyl)amino]-4-thiazolyl]methyl]thio]-N-(aminosulfonyl)-propanimidamide
Purity: ≥98%
Formula Markup: C8H15N7O2S3
Formula Weight: 337,5
Shelf life (days): 1460
CAS Number: 76824-35-6
Notes: Famotidine is a histamine H2 receptor antagonist with a Ki value of 12 nM in fractionated guinea pig cerebral cortex membranes.{36463} It is selective for H2 over H1 and muscarinic receptors (Kis = 4 and 28 µM, respectively, in bovine cerebral cortex).{23214} Famotidine inhibits histamine-induced acid secretion in isolated canine parietal cells (IC50 = 0.6 µM).{17620} It also suppresses histamine-induced gastric acid secretion in dogs when administered orally and in anesthetized rats when administered intraduodenally (ID50s = 10 and 400 µg/kg, respectively).{17620} Formulations containing famotidine have been used in the treatment of ulcers, gastroesophageal reflux disease (GERD), and heartburn, as well as to decrease the risk of gastrointestinal toxicity associated with non-steroidal anti-inflammatory drugs (NSAIDs).