Ethyl 4-(difluoromethyl)-5-methoxy-2-nitropyridine-3-acetate
2-(Difluoromethyl)-3-hydroxy-4-methoxypyridine-5-methanol
3-(Aminomethyl)-6-(difluoromethyl)-2-iodo-4-nitropyridine
2-Bromo-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-carboxylic acid