Trivial name (substance): Testosterone [USAN:INN] (base)
Generic Name: Testosterone topical

Common Brand, Trade, Commercial Denominations: Androgel, Testim, Zandrova gel, Androlone gel, AndroGel 1%, Testim 1%, Androderm, FIRST-Testosterone, Testoderm.

Manufacturers: Ranbaxy Lab, Laboratoires Besins International Montrouge, Unimed Pharmaceuticals, Inc., A Solvay Pharmaceuticals, Inc. Company Marietta, Malladi, Miller.

Chemical name: 17-beta hydroxyandrost-4-en-3-one
Systematic Name: (8S,9S,10R,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
Index name: Androst-4-en-17beta-ol-3-one
Molecular formula: C19H28O2
Molecular mass: 288.42 g/mol
Excretion: 90%
Melting point: 155–156 °C (311–313 °F)
Half life: 2-4 hours

CAS number: 58-22-0
Routes of administration: transdermal (cream, gel, or patch)