2-Methyl-5-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
6-Methyl-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Methyl-4-nitro-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Methyl-3-nitro-6-(trifluoromethoxy)pyridine-5-sulfonyl chloride