5,pregnane-7 alpha,21-dicarboxylic acid,17-ydroxy-11-methylsulfonic acid-3-ketone,-butyrolectone,methyl ester cas:(intermediate of eplerenone) | 5,pregnane-7 alpha,21-dicarboxylic acid,17-ydroxy-11-methylsulfonic acid-3-ketone,-butyrolectone,methyl ester cas:(intermediate of eplerenone) | 192704-58-8 |