1200-00-6 4-Formylpyridine thiosemicarbazone 4-Pyridylcarboxaldehyde thiosemicarbazone G 527 Hydrazinecarbothioamide, 2-(4-pyridinylmethylene)- Isonicotinaldehyde, thiosemicarbazone NSC731 Pyridine-4-carboxaldehyde, thiosemicarbazone