Vonoprazan
Names
[ CAS No. ]:
881681-00-1
[ Name ]:
Vonoprazan
[Synonym ]:
1H-Pyrrole-3-methanamine, 5-(2-fluorophenyl)-N-methyl-1-(3-pyridinylsulfonyl)-
Vonoprazan
1-[5-(2-Fluorophenyl)-1-(3-pyridinylsulfonyl)-1H-pyrrol-3-yl]-N-methylmethanamine
TAK-438
Biological Activity
[Description]:
TAK-438 (free base) is a novel P-CAB (potassium-competitive acid blocker) that reversibly inhibits H+/K+ ATPase with IC50 of 19 nM (pH 6.5), controls gastric acid secretion.IC50 value: 19 nM [1]Target: H+/K+ ATPasein vitro: TAK-438 is a pyrrole derivative with a chemical structure that is completely different from the P-CABs developed to date. TAK-438 inhibits gastric H+/K+ ATPase activity in a concentration-dependent manner. Under neutral conditions (pH 7.5), the inhibitory activity of TAK-438 is almost the same as that under weakly acidic conditions (pH 6.5). TAK-438 does not inhibit Na+/K+ ATPase activity even at concentration 500 times higher than their IC50 values against gastric H+/K+ ATPase activity. TAK-438 inhibits gastric H+/K+ ATPase in a K+ competitive manner with Ki of 3 nM [2]. in vivo: TAK-438 inhibits basal gastric acid secretion in a dose-dependent manner, and the ID50 value is 1.26 mg/kg. Intravenous administration of TAK-438 dose-dependently increases the pH of the gastric perfusate, and the increase in pH is sustained for 5 h after administration. At the 1 mg/kg dose, the pH plateaues 90 min after administration, and the highest pH value reached is 5.9 [2]. In addition, TAK-438 shows a potent and longer-lasting inhibitory effect on the histamine-stimulated gastric acid secretion in rats and dogs. TAK-438 shows significant antisecretory activity through high accumulation and slow clearance from the gastric tissue. TAK-438 is unaffected by the gastric secretory state, unlike PPIs [3].
[Related Catalog]:
[References]
[1]. Arikawa Y, et al. Discovery of a novel pyrrole derivative 1-[5-(2-fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]-N-methylmethanamine fumarate (TAK-438) as a potassium-competitive acid blocker (P-CAB). J Med Chem, 2012, 55(9), 4446-4456.
[2]. Hori Y, et al. 1-[5-(2-Fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]-N-methylmethanamine monofumarate (TAK-438), a novel and potent potassium-competitive acid blocker for the treatment of acid-related diseases. J Pharmacol Exp Ther, 2010, 335(1), 231-238.
[3]. Hori Y, et al. A study comparing the antisecretory effect of TAK-438, a novel potassium-competitive acid blocker, with lansoprazole in animals. J Pharmacol Exp Ther, 2011, 337(3), 797-804.
[Related Small Molecules]
Chemical & Physical Properties
[ Density]:
1.3±0.1 g/cm3
[ Boiling Point ]:
530.3±60.0 °C at 760 mmHg
[ Molecular Formula ]:
C17H16FN3O2S
[ Molecular Weight ]:
345.391
[ Flash Point ]:
274.5±32.9 °C
[ Exact Mass ]:
345.094727
[ LogP ]:
2.74
[ Vapour Pressure ]:
0.0±1.4 mmHg at 25°C
[ Index of Refraction ]:
1.622