Methyl 2-(difluoromethyl)-3-methoxy-6-(trifluoromethyl)pyridine-4-carboxylate
Methyl 2-(difluoromethyl)-3-methoxy-5-(trifluoromethyl)pyridine-4-carboxylate
Methyl 6-(difluoromethyl)-4-methoxy-3-(trifluoromethyl)pyridine-2-acetate
Methyl 2-(difluoromethyl)-4-methoxy-3-(trifluoromethyl)pyridine-6-acetate