has role 17beta-estradiol 3-hydroxy steroid 17-hydroxy steroid 17alpha-ethynylestradiol Ethynyl estradiol KEGG:C07534 LIPID_MAPS_instance:LMST02010036 17-ethinyl-3,17-estradiol A 3-hydroxy steroid that is estradiol substituted by a ethynyl group at position 17. It is a xenoestrogen synthesized from estradiol and has been shown to exhibit high estrogenic potency on oral administration. 296.17763 0 C20H24O2 KEGG:D00554 Beilstein:2419975 ethinyloestradiol VSDB:1887 Ethinyl estradiol chebi_ontology LINCS:LSM-5593 CHEBI:4903 17alpha-Ethinyl estradiol InChI=1S/C20H24O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,5,7,12,16-18,21-22H,4,6,8-11H2,2H3/t16-,17-,18+,19+,20+/m1/s1 17alpha-ethynylestradiol 296.40336 17-ethinylestradiol DrugBank:DB00977 17-ethinyl-3,17-oestradiol BFPYWIDHMRZLRN-SLHNCBLASA-N [H][C@]12CC[C@@]3(C)[C@@]([H])(CC[C@@]3(O)C#C)[C@]1([H])CCc1cc(O)ccc21 Ethinylestradiol Drug_Central:1082 HMDB:HMDB0001926 CAS:57-63-6 Reaxys:2419975 PMID:20189629 17alpha-ethynylestra-1,3,5(10)-triene-3,17beta-diol terminal acetylenic compound xenoestrogen