3,4-Difluoro-5-hydroxy-2-(trifluoromethoxy)pyridine
3,6-Difluoro-4-hydroxy-2-(trifluoromethoxy)pyridine
2,6-Difluoro-3-nitro-4-(trifluoromethoxy)pyridine
2,3-Difluoro-5-nitro-6-(trifluoromethoxy)pyridine
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