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