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