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