1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-[[3-[[[4-[(4,8-disulfo-2-naphthalenyl)azo]-2-methoxy-5-methylphenyl]amino]carbonyl]-4-methoxyphenyl]azo]benzoyl]amino]-5-methoxy-2-methylphenyl]azo]-, tetrapotassium salt
CAS Number:25746-43-4