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