Intrauterine administration of 18-methyl-15, 16-methyl-19-nor-20-helix-4-in-3-uterus, 16-methyl-19-20-helix-4

摘要

The present invention describes intrauterine contraception, gynaecological treatment and intrauterine system containing Formula 1 compounds of 18-methyl-15,16-methyl-19-nor-20-helix-4-in general formula (1).