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