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