1,7-Dihydroxy-6-naphthoic acid 2,8-Dihydroxy-3-naphthoic acid 2-Naphthalenecarboxylic acid,3,5-dihydroxy- 2-Naphthoic acid, 3,5-dihydroxy- 3,5-Dihydroxy-2-carboxynaphthalene 3,5-Dihydroxy-2-naphthoic acid 89-35-0 NSC50694