3-Pyridinecarboxylic acid, (1-(3-pyridinyl)ethylidene)hydrazide 5-22-02-00138 (Beilstein Handbook Reference) 91803-31-5 BRN 0405267 NICOTINIC ACID, (1-(3-PYRIDYL)ETHYLIDENE)HYDRAZIDE Nicotinylhydrazone de la 3-acetylpyridine [French]