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