4-(Bromomethyl)-3-cyano-5-(difluoromethyl)pyridine-2-acetic acid
3-(Bromomethyl)-4-cyano-5-(difluoromethyl)pyridine-2-acetic acid
2-(Bromomethyl)-4-cyano-5-(difluoromethyl)pyridine-3-acetic acid
Ethyl 6-cyano-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-acetate