3-Bromo-2-hydroxy-5-(trifluoromethoxy)pyridine-4-carboxylic acid
6-(Difluoromethyl)-3-methyl-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
5-Iodo-2-(trifluoromethyl)-4-(trifluoromethylthio)pyridine
4-(Difluoromethyl)-2-hydroxy-6-methoxy-3-nitropyridine