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