3,6-Dimethoxy-2-nitro-5-(trifluoromethoxy)pyridine
2-Amino-3,6-difluoro-5-(trifluoromethoxy)pyridine
4-Amino-2,5-difluoro-3-(trifluoromethoxy)pyridine
4,6-Dimethoxy-2-nitro-3-(trifluoromethoxy)pyridine
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