Methyl 3-(bromomethyl)-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-4-acetate
2-(Difluoromethyl)-6-nitro-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
6-(Difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-(Difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride