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