Ethyl 2,3-difluoro-4-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 2,4-dimethoxy-3-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 6-amino-2-fluoro-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3,4-difluoro-6-(trifluoromethoxy)pyridine-2-carboxylate