4-amino-2'-nitro-4'-sulfodiphenylamine acid, 2-NITR0-4-AMINODIPHENYLAMINE-2-SULPHONICACID/3RACID, Einecs 205-175-9, 2-NITRO-4'-AMINODIPHENYLAMINO-4-SULFONIC ACID, 4-[(4-aminophenyl)amino]-3-nitro-benzenesulfonicaci, 2-NITRO-4'-AMINODIPHENYLAMINE-4-SULFONIC ACID, 4-amino-2'-nitrodiphenylamine-4'-sulfonic acid, 4-(p-aminoanilino)-3-nitrobenzenesulphonic acid