19494-89-4 5-HP 5-Hydroxy-2-formylpyridine thiosemicarbazone 5-Hydroxy-2-pyridinecarbaldehyde thiosemicarbazone 5-Hydroxypicolinaldehyde thiosemicarbazone 5-Hydroxypyridine-2-carboxaldehyde thiosemicarbazone AIDS-160001 AIDS160001 Hydrazinecarbothioamide, {2-[(5-hydroxy-2-pyridinyl)methylene]-} NSC107392 Picolinaldehyde, 5-hydroxy-, thiosemicarbazone