Benzidine-3-sulphuric acid, 4,4'-Diamino(1,1'-biphenyl)-3-sulphonic acid, BIPHENYL-3-SULFONIC ACID,4,4'-DIAMINO, 4:4'-Diamino-3-diphenylyl hydrogen sulfate, (1,1'-Biphenyl)-3-sulfonic acid,4,4'-diamino, EINECS 218-132-4, 4,4'-Diamino-biphenyl-3-sulfonsaeure, Benzidine,3-sulfo, 4.4'-Diamino-diphenyl-sulfonsaeure-(3), benzidine-3-sulfonic acid, Benzidine-3-sulfuric acid, Benzidin-sulfonsaeure-(3), 4.4'-Diamino-biphenyl-sulfonsaeure-(3), 4,4'-diamino(1,1'-biphenyl)-3-sulfonic acid, 4,4'-diamino-biphenyl-3-sulfonic acid