874618-29-8 2,7-Naphthalenedisulfonic acid,4-[[5-(acetylamino)-2-methoxy-4-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo]-3-hydroxy-, trisodium salt
874618-37-8 1-Naphthalenesulfonic acid,4-[[2-(acetylamino)-4-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-5-methoxyphenyl]azo]-, disodium salt