2-Formyl-3-hydroxypyridine thiosemicarbazone 3-HP 3-Hydroxy-2-formylpyridine thiosemicarbazone 3814-79-7 AI3-51870 BRN 0164808 Hydrazinecarbothioamide, 2-((3-hydroxy-2-pyridinyl)methylene)- NSC 95678 Picolinaldehyde, 3-hydroxy-, thiosemicarbazone Pyridine-2-carboxaldehyde, 3-hydroxy-, thiosemicarbazone