3-Nitro-6-(trifluoromethoxy)pyridine-2-carboxamide
5-Nitro-2-(trifluoromethoxy)pyridine-3-carboxamide
2-Bromo-6-(difluoromethyl)-3-hydroxypyridine
6-Bromo-3-(difluoromethyl)-2-hydroxypyridine
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