4-Nitroso-N-ethyl-N-(2-methylsulfonamidoethyl)-m-toluidine hydrochloride 68214-80-2 EINECS 269-320-8 Methanesulfonamide, N-(2-(ethyl(3-methyl-4-nitrosophenyl)amino)ethyl)-, monohydrochloride N-(2-(Ethyl(3-methyl-4-nitrosophenyl)amino)ethyl)methanesulphonamide monohydrochloride