various naphthalene serial intermediates and organic chemicals 1,2,4-ACID1,2-DIAZOXY NAPHTHALENE-4-SULFONIC ACID1,5-DIHYDROXY NAPHTHALENE1, ... -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 ...