S-(N-Butyl)-isothiourea hydrochloride, n-butylisothiouronium chloride, 2-butyl-isothiourea,hydrochloride, USAF EL-89, S-butyl-isothiourea,hydrochloride, S-Butyl-isothioharnstoff,Hydrochlorid, Pseudourea,2-butyl-2-thio-,monohydrochloride, 2-butyl-2-thiopseudourea hydrochloride, Einecs 242-693-4