DIS. A. 15;2'-Nitro-4-dimethylaminoazobenzene;2'-Nitro-N,N-dimethylazobenzene-4-amine;N,N-dimethyl-4-(2-nitrophenyl)azoaniline;N,N-dimethyl-4-(2-nitrophenyl)azo-aniline;dimethyl-[4-(2-nitrophenyl)azophenyl]amine;N,N-Dimethyl-p-((o-nitrophenyl)azo)aniline;Aniline, N,N-dimethyl-p-((o-nitrophenyl)azo)-;N,N-dimethyl-4-(2-nitrophenyl)diazenylaniline;N,N-dimethyl-4-(2-nitrophenyl)diazenyl-aniline