| Bioactivity | Betazole (Ametazole), a pyrazole analogue of histamine, is an orally active histamine H2 receptor agonist. Betazole induces gastric acid secretion and causes an immediate and significant increase in common bile duct pressure. Betazole is used as a diagnostic agent known as histalog for investigating gastric acid secretory capacity[1][2][3]. |
| Invitro | Betazole (Ametazole) is a weak histamine agonist with relative selectivity towards H2 receptors and only minimal H1 activity. Betazole induces gastric inhibitory polypeptide (GIP) secretion[1]. |
| Name | Betazole |
| CAS | 105-20-4 |
| Formula | C5H9N3 |
| Molar Mass | 111.15 |
| Appearance | Oil |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | 4°C, protect from light *In solvent : -80°C, 6 months; -20°C, 1 month (protect from light) |
| Reference | [1]. Maples MD, Effects of betazole hydrochloride and cimetidine on common bile pressure and duodenal myoelectric activity in the dog. Am Surg. 1981;47(12):519-521. [2]. Spitz IM, Betazole-induced GIP secretion is not mediated by gastric HCl. Metabolism. 1982;31(4):380-382. [3]. CLAYMAN CB,. A simple oral gastric secretory stimulant (betazole hydrochloride). JAMA. 1961;175:908-909. |