Synonyms: Benzoicacid, 3,4-dimethoxy-, 4-[ethyl[2-(4-methoxyphenyl)-1-methylethyl]amino]butylester, hydrochloride (9CI);Veratric acid, 4-[ethyl(p-methoxy-a-methylphenethyl)amino]-, butylester, hydrochloride (6CI,7CI,8CI);1-Butanol, 4-[ethyl(p-methoxy-a-methylphenethyl)amino]-,veratrate, hydrochloride (8CI);4-[Ethyl(p-methoxy-a-methylphenethyl)amino]butyl veratrate hydrochloride;4'-[N-Ethyl-1''-methyl-2''-(4'''-methoxyphenyl)ethylamino]butyl3,4-dimethoxybenzoate hydrochloride;CSAG 144;Colaspa;Colofac;Colospasmin;Duspatal;Duspatalin;Mebaspa;NSC 169101;