4,4',4-triamino-3,3',3-trimethyl-triphenyl-carbenium-chloride

(2,4-dichloro-phenylhydrazono)-o-toluidino-acetic acid ethyl ester

N,N-dimethylaniline N-oxide hydrochloride

N,N-diethyl-N'-o-tolyl-thiourea

对硝基甲苯