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