Methyl 2-cyano-4-(difluoromethyl)-5-hydroxypyridine-3-acetate
5-Cyano-3-(difluoromethyl)-2-hydroxypyridine-4-acetic acid
2-(Aminomethyl)-3-chloro-4-(difluoromethyl)pyridine-5-acetic acid
Ethyl 5-(aminomethyl)-3-chloro-4-(difluoromethyl)pyridine-2-carboxylate