Synonyms: B(9a)-Homo-19-nor-5a-pregna-9(11),9a-diene-3b,20a-diamine, N3,N3,4,4,14-pentamethyl- (8CI);B(9a)-Homo-19-norpregna-9(11),9a-diene-3,20-diamine, N3,N3,4,4,14-pentamethyl-,(3b,5a,20S)-; Buxamine (7CI);Benzo[4,5]cyclohept[1,2-e]indene-3-methanamine,9-(dimethylamino)-1,2,3,3a,4,7,8,9,10,10a,11,12,12a,12b-tetradecahydro-a,3a,10,10,12b-pentamethyl-,[3S-[3a(R*),3aa,9a,10ab,12aa,12bb]]-; Buxamine E