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