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