Eplerenone chemical name: pregn-4-ene-7, 21-dicarboxylic acid 9, 11-epoxy-17-hydroxy-3-oxo gamma- lactone methyl ester cas no.: 107724-20-9 molecular formula: c24h30o6 molecular weight: 414.49 appearance: white crystalline powder; slightly soluble in water. Standard: enterprise standard