disodium 4-[[[3-[(chloroacetyl)amino]phenoxy]acetyl]amino]-5-hydroxy-6-[[2-(4-pentylphenoxy)phenyl]azo]naphthalene-1,7-disulphonate;4-[3-(Chloroacetylamino)phenoxyacetylamino]-5-hydroxy-6-[2-(4-pentylphenoxy)phenylazo]-1,7-naphthalenedisulfonic acid disodium salt
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