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
2-(Difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-5-acetic acid