4-Amino-N,N-dimethylaniline dihydrochloride4-(Dimethylamino)aniline dihydrochlorideN1,N1-Dimethylbenzene-1,4-diamine dihydrochlorideN,N-Dimethyl-p-phenylenediamine dihydrochlorideDMPPDA · 2HCl4-氨基-N,N-二甲基苯胺 二盐酸盐1-N,1-N-dimethylbenzene-1,4-diamine dihydrochlorideDMPD · 2HClN,N-二甲基对苯二胺 二盐酸盐N,N-DIMETHYL-p-PHENYLENEDIAMINE DIHYDROCHLORIDE4-Dimethylaminoaniline dihydrochlorideN,N-二甲基对苯二胺二盐酸盐