6-(Chloromethyl)-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-carboxylic acid
3-(Chloromethyl)-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid
2-(Difluoromethyl)-3-methoxypyridine-5-carbonyl chloride
5-(Chloromethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid