4,6-Difluoro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2,3-Diamino-6-methyl-5-(trifluoromethoxy)pyridine
2,4-Difluoro-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2,3-Diamino-5-methyl-4-(trifluoromethoxy)pyridine
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