2-Naphthalenesulfonic acid, 6-[(2,4-diamino-5-sulfophenyl)azo]-4-hydroxy-3-[[4-[[4-[[1-hydroxy-7-[[4-hydroxy-2-[(2-methylphenyl)amino]phenyl]azo]-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-, tetrasodium salt price

2-Naphthalenesulfonic acid, 6-[(2,4-diamino-5-sulfophenyl)azo]-4-hydroxy-3-[[4-[[4-[[1-hydroxy-7-[[4-hydroxy-2-[(2-methylphenyl)amino]phenyl]azo]-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-, tetrasodium salt price, total count: 1