Methyl 2-amino-4-(aminomethyl)-3-(difluoromethyl)pyridine-6-carboxylate
Methyl 2-amino-3-(aminomethyl)-6-(difluoromethyl)pyridine-4-carboxylate
3-Amino-6-(difluoromethyl)-2-methoxypyridine-5-sulfonamide
Methyl 3-amino-5-(aminomethyl)-2-(difluoromethyl)pyridine-4-carboxylate