1200-00-6 4-Formylpyridine thiosemicarbazone 4-Pyridylcarboxaldehyde thiosemicarbazone 5-21-07-00360 (Beilstein Handbook Reference) AI3-52028 BRN 0132697 EINECS 214-848-6 G 527 Hydrazinecarbothioamide, 2-(4-pyridinylmethylene)- ISONICOTINALDEHYDE THIOSEMICARBAZONE NSC 731 Pyridine-4-carboxaldehyde thiosemicarbazone