17-Hydroxy-3-oxo-17alpha-pregn-4-ene-7alpha,21-dicarboxylic acid, 7-(1-methylethyl) ester, monopotassium salt 41020-87-5 OH Opc(ME)-K Pregn-4-ene-7,21-dicarboxylic acid, 17-hydroxy-3-oxo-, 7-(1-methylethyl) ester, monopotassium salt, (7alpha,17alpha)- SC 27169 SC-27169