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2-Chloro-3-fluoropyridine-4-carboxylic acid 2-CHLORO-5-FLUORO-4-FORMYLPYRIDINE 3-Fluoropyridine-4-carboxylic acid 3-Fluoro-6-bromo-2-pyridinecarboxaldehyde 2-Fluoro-6-formylpyridine 4-Pyridinecarboxaldehyde 2,3,5,6-TETRAFLUOROPYRIDINE-4-CARBOXYLIC ACID 2,3,5-TRIFLUOROPYRIDINE-4-CARBOXALDEHYDE 3,5-Difluoro-4-pyridinecarboxaldehyde