828267-87-4 2,7-Naphthalenedisulfonic acid,4,4'-[1,4-phenylenebis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino]]bis[5-hydroxy-6-[[4-[(2-sulfoethyl)sulfonyl]phenyl]azo]-, tetrasodium salt
828267-88-5 2,7-Naphthalenedisulfonic acid,4,4'-[1,3-phenylenebis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino]]bis[5-hydroxy-6-[[4-[(2-sulfoethyl)sulfonyl]phenyl]azo]-, tetrasodium salt