<unk>  is a tricyclic compound, specifically a dibenzocycloheptadiene, and possesses three rings fused together with a side chain attached in its chemical structure. Other dibenzocycloheptadiene TCAs include amitriptyline (N-methylnortriptyline), protriptyline, and butriptyline.<unk>  is a secondary amine TCA, with its N-methylated parent amitriptyline being a tertiary amine. Other secondary amine TCAs include desipramine and protriptyline. The chemical name of<unk>  is 3-(10,11-dihydro-5H-dibenzoa,dcyclohepten-5-ylidene)-N-methyl-1-propanamine and its free base form has a chemical formula of C19H21N1 with a molecular weight of 263.384 g/mol. The drug is used commercially mostly as the hydrochloride salt; the free base form is used rarely. The CAS Registry Number of the free base is 72-69-5 and of the hydrochloride is 894-71-3.
Nortriptyline
Amitriptyline
Venlafaxine
Atomoxetine
Guanfacine
Fluoxetine
Nabilone
Naltrexone