Fluoxymesterone

Inquiry

Cat Number

API0232296

CAS Number

76-43-7

For research use only. We do not supply to patients.

For pharmaceutical-grade products or other inquiries, please contact our experts.

Product Detail Description Customer Q&A

CAS Number

76-43-7

EINECS

200-961-8

Storage

Store at room temperature

Synonyms

Halotestin; Androfluorene; Androfluorone; Fluoximesterone; Fluotestin

Molecular Formula

C20H29FO3

Molecular Weight

336.4

Smiles

C[C@]12CCC(=O)C=C1CC[C@@H]3[C@@]2([C@H](C[C@]4([C@H]3CC[C@]4(C)O)C)O)F

Appearance

White to light yellow crystalline powder

Melting Point

240°C

Boiling Point

474.2±45.0°C at 760 mmHg

Relative Density

1.0455 (Estimate)

General Description

Fluoxymesterone is a synthetic androgenic steroid with a 9α-fluoro and 11β-hydroxy substitution, belonging to the class of anabolic-androgenic steroids. Its chemical structure is 9α-fluoro-11β,17β-dihydroxy-17α-methyl-4-androsten-3-one. Fluoxymesterone is a white to off-white crystalline powder, practically insoluble in water but soluble in organic solvents. It is a potent androgen with both anabolic and androgenic effects.

Mechanism of Action

Fluoxymesterone binds to the androgen receptor in target tissues, promoting protein synthesis, muscle growth, and the development of male secondary sex characteristics. It also suppresses gonadotropin secretion through negative feedback, reducing testosterone production.

Application

Fluoxymesterone is indicated for the treatment of male hypogonadism, delayed puberty, and for the palliation of certain breast cancers in women. It is also used for the treatment of osteoporosis and for the management of the symptoms of androgen deficiency.

Does Fluoxymesterone require protection from light during long‑term storage?

Yes, it is photosensitive. UV exposure can cause photodegradation and discoloration of the steroid ring. Store in light‑resistant containers, preferably amber glass.