5-Chloro-2-(chloromethyl)-3-(difluoromethyl)-6-hydroxypyridine
4-Chloro-3-(chloromethyl)-6-(difluoromethyl)-2-hydroxypyridine
4-Chloro-3-(chloromethyl)-2-(difluoromethyl)-6-hydroxypyridine
3-Chloro-5-(difluoromethyl)-2-nitropyridine-4-carboxylic acid