Ethyl 4,5-difluoro-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2,6-difluoro-4-(trifluoromethoxy)pyridine-3-carboxylate
3,4-Dihydroxy-6-(trifluoromethoxy)pyridine-2-acetic acid
3,4-Dihydroxy-2-(trifluoromethoxy)pyridine-6-acetic acid
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