Ethyl 2-(bromomethyl)-4-methoxy-5-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-(bromomethyl)-3-methoxy-6-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 3-(bromomethyl)-6-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 4-(difluoromethyl)-2-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylate