2,7-Naphthalenedisulfonic acid, 3-[2-(5-chloro-2-phenoxyphenyl)diazenyl]-4-hydroxy-5-[[(4-methylphenyl)sulfonyl]amino]-, sodium salt (1:2)HCID 160832CAS 6416-66-6 · C29H20ClN3Na2O10S3
