19741-72-1

3-Methoxy-18-methylestra-2,5(10)dien-17-one 17-ethylene ketal 18-Methylestra-2,5(10)-dien-3-ol-17-one 17-ethylene ketal 3-methyl ether Gona-2,5(10)-dien-17-one, 13-ethyl-3-methoxy-, cyclic 1,2-ethanediyl acetal, (8α)-(±)- (9CI)