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