Ethyl 3-(difluoromethyl)-2-hydroxy-4-(trifluoromethyl)pyridine-5-carboxylate
5-(Aminomethyl)-2-(difluoromethyl)-3-hydroxypyridine-6-methanol
Ethyl 4-(difluoromethyl)-2-hydroxy-5-(trifluoromethyl)pyridine-3-acetate
4-(Aminomethyl)-3-(difluoromethyl)-2-hydroxypyridine-5-carboxylic acid