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