C.I. 23266 ACID RED 111 disodium 3-[[2,2'-dimethyl-4'-[[4-[[(p-tolyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-2,7-disulphonate 2,7-Naphthalenedisulfonic acid, 3-2,2-dimethyl-4-4-(4-methylphenyl)sulfonyloxyphenylazo1,1-biphenyl-4-ylazo-4-hydroxy-, disodium salt C.I. Acid Red 111 Acid red 111 (C.I. 23266) Scarlet F-3GL Acid Red F-3GL