Methyl 3-(difluoromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 4-hydroxy-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carboxylate
6-(Difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-acetic acid
Methyl 3-(difluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxylate