Forskolin (Coleonol) is a labdane diterpene produced by the plant Coleus forskohlii. Other names include pashanabhedi, Indian coleus, makandi, HL-362, maohouqiaoruihua. Forskolin is commonly used in laboratory research to increase levels of cyclic AMP by stimulation of adenylate cyclase.
Forskolin contains some unique functional elements, including the presence of a tetrahydropyran-derived heterocyclic ring. Forskolin is chemically described as (3R,4aR,5S,6S,6aS,10S,10aR,10bS)-3-Ethenyl-6,10,10b-trihydroxy-3,4a,7,7,10a-pentamethyl-1-oxododecahydro-1H-naphtho[2,1-b] pyran-5-yl acetate. Its molecular formula is C22H34O7, which corresponds to a molecular weight of 410.5.
Forskolin is a white to off-white powder. Its melting point is 228-232°C.