1-Naphthalenecarboxylic acid, 8-formyl- 5811-87-0 8-Formyl-1-naphthalenecarboxylic acid 8-Formyl-1-naphthoic acid EINECS 227-377-6 NSC 100959 Naphthalaldehydic acid Naphthaldehydic acid peri-Naphthalaldehydic acid