2-(Bromomethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid
4-Cyano-3-(difluoromethyl)pyridine-2-sulfonyl chloride
2-(Bromomethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetic acid
4-(Chloromethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride