4-(Bromomethyl)-3,6-diamino-2-(difluoromethyl)pyridine
6-(Aminomethyl)-3-(difluoromethyl)-2-fluoropyridine-4-carboxylic acid
4-(Chloromethyl)-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-5-sulfonyl chloride
4-Chloro-3-(chloromethyl)-6-(difluoromethyl)pyridine-2-carboxylic acid