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