Methyl 3-chloro-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-chloro-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-acetate
Methyl 3-cyano-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-acetate
3-Fluoro-2-methoxy-4-(trifluoromethoxy)pyridine-5-acetic acid