Methyl 6-amino-3-(difluoromethyl)-4-fluoropyridine-2-carboxylate
4-Amino-3-(difluoromethyl)-6-methoxypyridine-2-acetic acid
Methyl 2-amino-5-(difluoromethyl)-3-fluoropyridine-4-carboxylate
Ethyl 4-amino-2-(difluoromethyl)-3-fluoropyridine-6-carboxylate