Oxandrolone Chemical Name: 5alpha-androstan-2-oxa-17alpha-methyl-17beta-ol-3-one CAS NO.: 53-39-4 Molecular Formula: C19H30O3 Molecular weight: 306.4 Appearance: White or almost white crystalline powder Standard: USP28 Usage: A synthetic, anabolic steroid. Used to promote muscle growth and combat involuntary weight loss. It has also been used to treat cases of osteoporosis.