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