2,7-Naphthalenedisulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-, tetrasodium salt 2150-54-1 Benzo New Blue 5B-CF Benzo New Blue 5BFS Benzo New Blue 5BS C.I. 23790 C.I. Direct Blue 25 C.I. Direct Blue 25, tetrasodium salt Chloramine New Blue 5B Derma Blue 5B Dianil Blue B Diazol Pure Blue BR Diphenyl Brilliant Blue 5B Direct Blue 5B Direct Brilliant Blue 5BC Direct New Blue 5B Direct Pure Blue 5B Hispamin Blue DB NSC23347 Niagara Blue 5B Nippon New Blue 5BS Phenamine Blue 5B Pontamine Blue 5B