... 5-DIHYDROXY NAPHTHALENE1,5-NAPHTHALENE DISULFONIC ACID 1,5-NAPHTHALENE DISULFONIC ACID SODIUM SALT(1,5-NDS) ... -AMINO-8-NAPHTHOL1-NAPHTHOL1-NAPHTHOL-5-SULFONIC ACID (L ACID)1-NAPHTHOL-8-SULFONIC ACID1-NAPHTHYLAMINE2,3- ... ACID2,6-NAPHTHALENE DISULFONIC ACID SODIUM SALT(2,6-NDS)2,7-DIHYDROXY ... NAPHTHALENE2,7-NAPHTHALENE DISULFONIC ACID SODIUM SALT(2,7-NDS)2-NAPHTHOL4- ...