benzenesulfonic acid; o-Aminobenzenesulfonic acid (Orthanilic acid); p-Aminobenzoylamino naphthalene-sulfonic acid; 3-Amino-2,7-naphthalene - 4-Amino-1-naphthalene sulfonic acid, sodium salt; 5-Amino-1-naphthalene sulfonic acid (Laurent's acid); 7-Amino-1,3,6-naphthalene trisulfonic acid; Aminophenol, substituted; 8- Anilino - 1 - naphthalene sulfonic acid (Phenyl Peri acid); 6-Chlorometanilic acid; 2-Chloro-5-nitroaniline; 4-Chloro-3-nitroaniline; 4-Chloro-o- toluidine (NH2=1] and hydrochloride; 5-Chloro-o- toluidine [NH2=1]| (Chloro-o- toluidine [CH3=1]); |