N-o-tolyl-1-naphthylamine N-(P-TOLYL)-1-NAPHTHYLAMINE N-(P-TOLYL)-2-NAPHTHYLAMINE PYRROLE BLUE TNS N4,N4'-DI-NAPHTHALEN-2-YL-BIPHENYL-4,4'-DIAMINE 4-HYDROXY-7-P-TOLUIDINO-2-NAPHTHALENESULFONIC ACID N,N''-DI-P-TOLYL-N,N''-BIS-(4-BUTYLPHENYL)-PHENANTHRENE-9,10-DIAMINE BETA-NPB 2,6-TNS 4-(8-Hydroxy-6-sulfonaphthalen-2-ylamino)benzoic acid 6-(P-TOLUIDINO)NAPHTHALENE-2-SULFONYL N,N'-BIS(PHENANTHREN-9-YL)-N,N'-DIPHENYLBENZIDINE N,N,N',N'-Tetra(2-naphthalenyl)(1,1'-biphenyl)-4,4'-diamine N,N'-DI(NAPHTHALENE-2-YL)-N,N'-DI(3-METHYL-PHENYL)-BENZIDINE 2-(P-TOLUIDINO)NAPHTHALENE-6-SULFONIC ACID SODIUM SALT