3-Methoxy-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-Methoxy-5-methyl-2-nitro-6-(trifluoromethoxy)pyridine
3-Methoxy-2-nitro-4-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-Methoxy-6-nitro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
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