Buciclic acid, or bucyclic acid, systematic name trans-4-<u>bu</u>tyl<u>cycl</u>ohexane-1-carboxyl<u>ic acid</u>, is a simple alkyl-substituted cyclohexanecarboxylic acid. The salts and esters of buciclic acid are known as buciclates (bucyclates). Pharmaceutical examples of esters of this acid include testosterone buciclate, a long-acting prodrug of the androgen testosterone, and dimethandrolone buciclate, a prodrug of dimethandrolone.