17-Hydroxy-3-oxo-17 alpha-pregn-4-ene-7 alpha,21-dicarboxylic acid 7-methylester gamma-lactone 17-Hydroxy-3-oxo-17alpha-pregn-4-ene-7alpha,21-dicarboxylic acid 7-methylester gamma-lactone 41020-65-9 Mexrenone Pregn-4-ene-7,21-dicarboxylic acid, 17-hydroxy-3-oxo-, gamma-lactone, methyl ester, (7alpha,17alpha)- SC 25152 SC-25152