Greenleafpharm 4,9-ESTREN-3, 17-DIONE Chemical Names: Estra-4,9-diene-3,17-dione Ref.Standard: Enterprise Standard Description :Yellowish Crystalline Powder Melting Point: 132~140°C Rotation:-170°~ -180° Assay: ≥98.5% Ethylene Deltenone Chemical Names: 17beta-hydroxy-17-alpha-(-1-propynyl)-estra-5(10),9(11)-diene-3-Ethylenedioxy Ref.Standard: Enterprise Standard Description :White Crystalline Powder Melting Point: ≥145°C Rotation:+300°~ +320° Assay: ≥98.5% epoxy Chemical Names: 17beta-hydroxy-17-alpha-(-1-propynyl)-estra-5(10)-epoxy-9(11)-ene-3-Ethylenedioxy Ref.Standard: Enterprise Standard Description :White Crystalline Powder Melting Point: ≥145°C Assay: ≥95% web: