Ethyl 2,3-diamino-6-(difluoromethyl)pyridine-5-carboxylate
2-(Bromomethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridine-6-acetic acid
2-(Aminomethyl)-6-cyano-4-(difluoromethyl)-3-(trifluoromethyl)pyridine
4-(Chloromethyl)-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-carboxylic acid