... ACID1,6-NAPHTHALENE DISULFONIC ACID SODIUM SALT(1,6-NDS)1,7-CLEVES ACID1,8-DIAMINO NAPHTHALENE1-ACETYL AMINO ... DISULFONIC ACID SODIUM SALT(2,6-NDS)2,7-DIHYDROXY NAPHTHALENE2,7-NAPHTHALENE DISULFONIC ACID SODIUM SALT(2,7-NDS)2-NAPHTHOL4-CHLORO-1, ... 8-NAPHTHALIC ANHYDRIDE4-CHLORO-2-NITROANILINE6-NITRO-1,2 ...