17-Hydroxy-6-methyl-19-nor-4,6-pregnadiene-3,20-dione 17-Hydroxy-6-methyl-19-norpregna-4,6-diene-3,20-dione 19-Norpregna-4,6-diene-3,20-dione, 17-hydroxy-6-methyl- 58691-88-6 Nomegestrol Nomegestrol [INN] Nomegestrolum [Latin]