19-Norpregn-5(10)-ene-21-carboxylic acid, 17-hydroxy-11-methyl-3-oxo-, gamma-lactone, (11beta,17alpha)- 24130-06-1 3-(3-Oxo-11beta-methyl-17beta-hydroxyestr-5(10)-en-17alpha-yl)propionic acid gamma-lactone SC 19773 SC-19773