Sub Group: Research Compounds Catalog Number: 9900 Formula: C20H24O2 CAS Number: 57-63-6 Molecular Weight: 296.4 Synonyms: (17a)-19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol17a-EthynylestradiolAmenoronEticylolEticyclinEtivexFeminoneGynolettKolpolynLynora