Title: Fluoxymesterone
CAS Registry Number: 76-43-7
CAS Name: (11b,17b)-9-Fluoro-11,17-dihydroxy-17-methylandrost-4-en-3-one
Additional Names: 11b,17b-dihydroxy-9a-fluoro-17a-methyl-4-androsten-3-one; 9a-fluoro-11b-hydroxy-17a-methyltestosterone
Trademarks: Halotestin (Pfizer)
Molecular Formula: C20H29FO3
Molecular Weight: 336.44
Percent Composition: C 71.40%, H 8.69%, F 5.65%, O 14.27%
Literature References: Prepn: Herr et al., J. Am. Chem. Soc. 78, 501 (1956). cf. Herr, US 2813881 (1957 to Upjohn). Comprehensive description: J. Kirschbaum, Anal. Profiles Drug Subs. 7, 251-275 (1978).
Properties: Crystals, dec 270°. [a]D +109° (ethanol). uv max (ethanol): 240 nm (e 16700). Sol in pyridine; slightly sol in acetone, chloroform; sparingly sol in methanol. Practically insol in water, ether, benzene, hexanes.
Optical Rotation: [a]D +109° (ethanol)
Absorption maximum: uv max (ethanol): 240 nm (e 16700)
NOTE: This is a controlled substance (anabolic steroid): 21 CFR, 1308.13, as defined in 1300.01.
Therap-Cat: Androgen.
Keywords: Androgen.

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