Methyl 3-chloro-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-6-carboxylate
4-Chloro-2-methoxy-5-(trifluoromethoxy)pyridine-3-acetic acid
Methyl 2-chloro-6-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylate
5-Chloro-3-methoxy-2-(trifluoromethoxy)pyridine-4-acetic acid