17-epi-Ethynyl Estradiol

• CAT Number: R048426
• CAS Number: 4717-38-8
• Molecular Formula: C20H24O2
• Molecular Weight: 296.41
• Purity: ≥95%
• Synonyms: 19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol; 17-Ethynyl-17α-estradiol; 17β-Ethynylestradiol; Ethynyl Estradiol EP Impurity A
• Storage: -20°C
• IUPAC Name: (8R,9S,13S,14S,17S)-17-ethynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
• InChI: 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
• InChIKey: BFPYWIDHMRZLRN-SWBPCFCJSA-N
• SMILES: CC12CCC3C(C1CCC2(C#C)O)CCC4=C3C=CC(=C4)O

17-epi-Ethynyl Estradiol is a synthetic estrogen widely used in pharmaceutical research and hormone therapy development. Known for its potent estrogenic activity, it is essential for studying hormonal regulation, reproductive health, and the development of contraceptives. This compound’s high purity ensures consistent and reliable results in experimental studies. Its applications extend to cancer research, particularly in hormone-responsive cancers, making it a valuable tool for advancing therapeutic strategies and understanding estrogen receptor interactions in various biological processes.