... SODIUM SALT(1,5-NDS)1,6-CLEVES ACID1,6-NAPHTHALENE DISULFONIC ACID SODIUM SALT(1,6-NDS)1,7-CLEVES ... 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-CHLORO ...