N,N-DIMETHYL-p-PHENYLENEDIAMINE OXALATEN,N-Dimethyl-1,4-benzenediamine Ethanedioate4-氨基-N,N-二甲基苯胺 半草酸盐N,N-Dimethyl-p-phenylenediamine hemioxalate salt对二甲氨基苯胺 半草酸盐N,N-二甲基对苯二胺 半草酸盐DMPPDAN,N-二甲基对苯二胺 半草酸盐N,N-二甲基-1,4-苯二胺草酸盐N,N-Dimethyl-p-phenylenediamine hemioxalate saltN,N-Dimethyl-1,4-phenylenediamine oxalate