<unk>  is a member of the diphenylmethylpiperazine class of antihistamines.<unk>  is supplied mainly as a dihydrochloride salt<unk>  hydrochloride) but also to a lesser extent as an embonate salt<unk>  pamoate). The molecular weights of<unk> ,<unk>  dihydrochloride, and<unk>  pamoate are 374.9 g/mol, 447.8 g/mol, and 763.3 g/mol, respectively. Due to their differences in molecular weight, 1 mg<unk>  dihydrochloride is equivalent to about 1.7 mg<unk>  pamoate. Analogues Analogues of<unk>  include buclizine, cetirizine, cinnarizine, cyclizine, etodroxizine, meclizine, and pipoxizine among others. Synthesis<unk>  is synthesized by the alkylation of 1-(4-chlorobenzhydryl)piperazine with 2-(2-chloroethoxy)ethanol: center
Hydroxyzine
Naltrexone
Nabilone
Chloracyzine
Phenelzine
Nortriptyline
Ketanserin
Promethazine