130798-64-0 130798-65-1 (TETRASODIUM SALT) 2,7-Naphthalenedisulfonic acid, 4,4'-[[1,1'-biphenyl]-4,4'-diylbis(sulfonylimino)]bis[5-hydroxy- 4,4'-[4,4'-Biphenyldiylbis(sulfonylamino)]bis(5-hydroxy-2,7-naphthalenedisulfonic acid) BiPhdiNaphdiOH-4(SO3Na) AIDS-002507 AIDS002507