1-(3-(Isopropylamino)propyl)-3-(2,6-xylyl)urea monohydrochloride 74738-24-2 74752-07-1 Recainam hydrochloride Recainam hydrochloride [USAN] Urea, N-(2,6-dimethylphenyl)-N'-(3-((1-methylethyl)amino)propyl)-, monohydrochloride Vanorm WY 42,362 HCl