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