Ethyl 3-(aminomethyl)-2-(difluoromethyl)-6-hydroxypyridine-4-carboxylate
Ethyl 2-(aminomethyl)-3-(difluoromethyl)-6-hydroxypyridine-4-carboxylate
2-(Chloromethyl)-6-(difluoromethyl)-4-hydroxypyridine-3-acetic acid
Methyl 2-(aminomethyl)-3-(difluoromethyl)-5-hydroxypyridine-6-acetate