etodroxizine etodroxizine etodroxizine (inn) (brand names vesparax, drimyl, indunox, isonox) is a first-generation antihistamine of the diphenylmethylpiperazine group which is used as a sedative/hypnotic drug in europe and south africa. etodroxizineclinical dataatc codenoneidentifiers iupac name 2--1-piperazinyl}ethoxy)ethoxy]ethanol cas number17692-34-1pubchem cid63345chemspider57011uniici1s3xak7ochemblchembl2104263chemical and physical dataformulac23h31cln2o3molar mass418.96 g·mol−13d model (jsmol)interactive image smiles c1ccc(cc1)c(c2ccc(cc2)cl)n3ccn(cc3)ccoccocco inchi inchi=1s/c23h31cln2o3/c24-22-8-6-21(7-9-22)23(20-4-2-1-3-5-20)26-12-10-25(11-13-26)14-16-28-18-19-29-17-15-27/h1-9,23,27h,10-19h2key:vufoctsxhuwgpw-uhfffaoysa-n