2-(Bromomethyl)-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-acetic acid
6-(Bromomethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-acetic acid
3-(Difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-(Difluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine-4-sulfonyl chloride