Ethyl 5-(fluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 4-(fluoromethyl)-2-methoxy-5-(trifluoromethoxy)pyridine-3-carboxylate
5-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-4-acetic acid
4-(Difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine-2-acetic acid