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