... SULFONIC ACID1,5-DIHYDROXY NAPHTHALENE1,5-NAPHTHALENE DISULFONIC ACID 1,5-NAPHTHALENE DISULFONIC ACID SODIUM SALT(1,5-NDS)1,6-CLEVES ... AMINO-7-NAPHTHOL1-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 ...