17-Caproxy-17-ethinyl-19-nor-4-androstene-3-one oxime 17-Hydroxy-19-nor-17-alpha-pregn-4-en-20-yn-3-one hexanoate (ester) oxime 19-Nor-17-alpha-pregn-4-en-20-yn-3-one, 17-hydroxy-, hexanoate (ester), oxime 27953-80-6 BRN 2313342 Estr-4-en-3-one, 17-hydroxy-17-ethynyl-, hexanoate, oxime ORF 5656