2-Amino-3-(difluoromethyl)-4-hydroxypyridine-5-acetic acid
Ethyl 3-amino-6-(difluoromethyl)-2-hydroxypyridine-4-carboxylate
Ethyl 3-amino-6-(difluoromethyl)-2-hydroxypyridine-5-carboxylate
Ethyl 3-amino-6-(difluoromethyl)-4-hydroxypyridine-2-carboxylate