17alpha-Ethynyl-19-norandrost-4-ene-3beta,17-beta-diol diacetate;17alpha-Ethynyl-3,17-dihydroxy-4-estrene diacetate;17alpha-Ethynyl-4-estrene-3beta,17beta-diol diacetate;17alpha-Ethynylestr-4-ene-3beta,17beta-diol acetate;19-Nor-17alpha-pregn-4-en-20-yne-3beta,17-diol diacetate;3beta, 17beta-Diacetoxy-17alpha-ethynyl-4-oestrene;3beta,17beta-Diacetoxy-19-nor-17alpha-pregn-4-en-20-yne;17a-Ethynyl-19-norandrost-4-ene-3b,17-b-diol diacetate;17a-Ethynyl-19-norandrost-4-ene-3b,17-b-diol diacetic acid;17alpha-Ethynyl-19-norandrost-4-ene-3beta,17-beta-diol diacetic acid;17α-ethynyl-19-norandrost-4-ene-3β,17-β-diol diacetate;17α-ethynyl-19-norandrost-4-ene-3β,17-β-diol diacetic acid;Ethynodiol diacetic acid;17a-Ethynyl-3,17-dihydroxy-4-estrene diacetate;17a-Ethynyl-3,17-dihydroxy-4-estrene diacetic acid;17alpha-Ethynyl-3,17-dihydroxy-4-estrene diacetic acid;17α-ethynyl-3,17-dihydroxy-4-estrene diacetate;17α-ethynyl-3,17-dihydroxy-4-estrene diacetic acid;17a-Ethynyl-4-estrene-3b,17b-diol diacetate;17a-Ethynyl-4-estrene-3b,17b-diol diacetic acid;17alpha-Ethynyl-4-estrene-3beta,17beta-diol diacetic acid;17α-ethynyl-4-estrene-3β,17β-diol diacetate;17α-ethynyl-4-estrene-3β,17β-diol diacetic acid;17a-Ethynylestr-4-ene-3b,17b-diol acetate;17a-Ethynylestr-4-ene-3b,17b-diol acetic acid;17alpha-Ethynylestr-4-ene-3beta,17beta-diol acetic acid;17α-ethynylestr-4-ene-3β,17β-diol acetate;17α-ethynylestr-4-ene-3β,17β-diol acetic acid;19-Nor-17a-pregn-4-en-20-yne-3b,17-diol diacetate;19-Nor-17a-pregn-4-en-20-yne-3b,17-diol diacetic acid;19-Nor-17alpha-pregn-4-en-20-yne-3beta,17-diol diacetic acid;19-Nor-17α-pregn-4-en-20-yne-3β,17-diol diacetate;19-Nor-17α-pregn-4-en-20-yne-3β,17-diol diacetic acid;3b, 17b-Diacetoxy-17a-ethynyl-4-oestrene;3β, 17β-diacetoxy-17α-ethynyl-4-oestrene;3b,17b-Diacetoxy-19-nor-17a-pregn-4-en-20-yne;3β,17β-diacetoxy-19-nor-17α-pregn-4-en-20-yne;Ethinodiol diacetate;Ethynodiol;Etynodiol;Ethyndiol diacetate;Diacetate, ethyndiol;Ethynodiol diacetate, (17 alpha)-isomer;Femulen;Continuin;(3 beta, 17 alpha)-19-Norpregn-4-en-20-yne-3,17 diol diacetate;Diacetate, ethynodiol