3839581 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3839581 > 2 > ChemIDplus > TU5551000 > NIOSH/TU5551000 > 17-alpha-Acetoxypregn-4-ene-3-beta-ol-20-one and mestranol (20:1) Pregn-4-en-20-one, 3-beta,17-dihydroxy-, 17-acetate, and 3-methoxy-19-nor-17-alpha-pregna-1,3,5(10)-trien-20-yn-17-ol (20:1) TU5551000 > TU5551000 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=TU5551000 $$$$