4-Chloro-1-hydroxynaphthalene-2-carboxylic acid (CAS NO.5409-15-4), its Synonyms are 2-Naphthalenecarboxylicacid, 4-chloro-1-hydroxy- ; 2-Naphthoicacid, 4-chloro-1-hydroxy- (6CI,7CI,8CI) ; 4-Chloro-1-hydroxy-2-naphthoic acid .