Methyl 2-amino-5-(difluoromethyl)-4-methoxypyridine-3-acetate
Methyl 3-amino-4-(difluoromethyl)-6-methoxypyridine-2-acetate
Ethyl 5-amino-2-(difluoromethyl)-3-methoxypyridine-4-carboxylate
Methyl 3-amino-4-(difluoromethyl)-2-methoxypyridine-6-acetate