N-BENZOYL H ACID

4-Benzamido-5-hydroxy-2,7-naphthalenedisulfonic acid

4-formamido-5-hydroxynaphthalene-2,7-disulfonic acid

4-(benzoylamino)-5-hydroxy-7-naphthalenedisulfonicacid

5-Hydroxy-4-(benzoylamino)-2,7-naphthalenedisulfonic acid

4-(benzoylamino)-5-hydroxynaphthalene-2,7-disulphonic acid