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