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