Ethyl 2,5-dihydroxy-3-(trifluoromethoxy)pyridine-6-carboxylate
2-Methoxy-6-nitro-4-(trifluoromethoxy)pyridine
2-Methoxy-5-nitro-4-(trifluoromethoxy)pyridine
2-Methoxy-4-nitro-5-(trifluoromethoxy)pyridine
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