Methyl 6-amino-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-acetate
Methyl 6-amino-4-(chloromethyl)-3-(difluoromethyl)pyridine-2-acetate
5-Bromo-3-chloro-2-cyano-4-(difluoromethyl)pyridine
3-Amino-6-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetic acid