Synonyms: o-Phenylenediamine,4,5-dimethoxy- (6CI,8CI); 1,2-Diamino-4,5-dimethoxybenzene;1,2-Diamino-4,5-methoxybenzene; 2-Amino-4,5-dimethoxyaniline;4,5-Diamino-1,2-dimethoxybenzene; 4,5-Diaminoveratrole;4,5-Dimethoxy-1,2-benzenediamine; 4,5-Dimethoxy-1,2-diaminobenzene;4,5-Dimethoxy-1,2-phenylenediamine; 4,5-Dimethoxy-o-phenylenediamine