3688-05-9 4-Pyridinecarboxylic acid, (3-(2-furanyl)-1-methyl-2-propenylidene)hydrazide Isonicotinic acid, (3-(2-furyl)-1-methylallylidene)hydrazide Larusan N'-(3-(2-Furyl)-1-methyl-2-propenylidene)isonicotinic hydrazide NSC 26272