Ethyl 3-amino-6-(difluoromethyl)-2-fluoropyridine-4-acetate
Ethyl 4-amino-2-(chloromethyl)-3-(difluoromethyl)pyridine-5-acetate
4-Bromo-3-cyano-5-(difluoromethyl)-2-(trifluoromethyl)pyridine
4-(Aminomethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylic acid