1,7-Naphthalenedisulfonic acid, 4-benzamido-6-((4-(N-cyclohexylacetamido)phenyl)azo)-5-hydroxy-, disodium salt 1,7-Naphthalenedisulfonic acid, 6-((4-(acetylcyclohexylamino)phenyl)azo)-4-(benzoylamino)-5-hydroxy-, disodium salt 6417-35-2