17-Ethynylestriol Price Not Available 25mg 17-Ethynylestriol Supplier Page Catalog Number R008588 Molecular Formula C20H24O3 CAS# 4717-40-2 Purity ≥90% Inchi InChI=1S/C20H24O3/c1-3-20(23)18(22)11-17-16-6-4-12-10-13(21)5-7-14(12)15(16)8-9-19(17,20)2/h1,5,7,10,15-18,21-23H,4,6,8-9,11H2,2H3/t15-,16-,17+,18-,19+,20+/m1/s1 Inchi Key VSODIPLKPBLGCC-NADOGSGZSA-N SMILES CC12CCC3C(C1CC(C2(C#C)O)O)CCC4=C3C=CC(=C4)O Size 25mg Supplier Page https://www.musechem.com/product/R008588.html