4-(Bromomethyl)-3-(difluoromethyl)pyridine-2-carboxylic acid
2-(Chloromethyl)-5-cyano-4-(difluoromethyl)pyridine
4-(Bromomethyl)-2-(difluoromethyl)pyridine-3-carboxylic acid
5-(Chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-carbonyl chloride