Ethyl 2-bromo-5-(difluoromethyl)pyridine-3-acetate
6-(Chloromethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid
Ethyl 2-bromo-4-(difluoromethyl)pyridine-3-acetate
2-(Chloromethyl)-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid