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