Methyl 2-(difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 2-(difluoromethyl)-3-methoxy-5-(trifluoromethoxy)pyridine-6-acetate
Methyl 3-methyl-6-nitro-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 4-(difluoromethyl)-3-methoxy-5-(trifluoromethoxy)pyridine-2-carboxylate