Nome Químico: (3Z)-13β-ethyl-3-(hydroxyimino)-18,19-dinor-17α-pregn-4-en-20-yn-17-ol (as per EP)
Sinônimo: (Z)-norelgestromin
Sorrisos: CC[C@@]12[C@@](C#C)(O)CC[C@@]1([H])[C@@](CCC3=C/C4=N\O)([H])[C@]([C@@]3([H])CC4)([H])CC2
Inchi: InChI=1S/C21H29NO2/c1-3-20-11-9-17-16-8-6-15(22-24)13-14(16)5-7-18(17)19(20)10-12-21(20,23)4-2/h2,13,16-19,23-24H,3,5-12H2,1H3/b22-15+/t16-,17+,18+,19-,20-,21-/m0/s1