6-Chloro-2-(difluoromethyl)-3-hydroxypyridine-4-carboxaldehyde
4,5-Diamino-3-hydroxy-2-(trifluoromethoxy)pyridine
2,4-Dichloro-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-(Difluoromethyl)-3-nitropyridine-6-carboxylic acid
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