101-57-5 4-Anilinobenzenesulfonic acid 4-Sulfodiphenylamine Benzenesulfonic acid, 4-(phenylamino)- Benzenesulfonic acid, p-anilino- Diphenylamine-4-sulfonic acid Diphenylaminosulfonic acid EINECS 202-955-0 N-Phenyl-p-aminobenzenesulfonic acid N-Phenylsulfanilic acid NSC 73722 Sulfanilic acid, N-phenyl- (8CI) p-Anilinobenzenesulfonic acid p-Anilinobenzenesulphonic acid