4-Nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-sulfonyl chloride
3-Methyl-4-nitro-2-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Nitro-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-sulfonyl chloride
3-Methyl-5-nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine