Methyl 2-amino-6-(difluoromethyl)-3-hydroxypyridine-4-carboxylate
Methyl 2-amino-5-(difluoromethyl)-6-hydroxypyridine-3-carboxylate
2-Amino-4-(difluoromethyl)-3-hydroxypyridine-6-carboxaldehyde
2-Amino-4-(difluoromethyl)-3-hydroxypyridine-5-carboxaldehyde