2-Hydroxy-3-naphthoic acid hydrazide 2-Hydroxy-3-naphthoylhydrazine 2-Naphthalenecarboxylic acid, 3-hydroxy-, hydrazide 2-Naphthoic acid, 3-hydroxy-, hydrazide 3-Hydroxy-2-naphthoic acid hydrazide 3-Hydroxy-2-naphthoylhydrazine 5341-58-2 NSC49198