2-Cyano-4-(difluoromethyl)-6-hydroxypyridine-3-carboxylic acid
2-(Difluoromethyl)-4,5-dimethoxypyridine-3-acetonitrile
Ethyl 3-(difluoromethyl)-6-fluoro-2-nitropyridine-4-carboxylate
5-Bromo-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carboxylic acid