Ethyl 6-bromo-3-(difluoromethyl)-2-methoxypyridine-4-acetate
4-(Aminomethyl)-2-bromo-3-(difluoromethyl)pyridine-6-carboxylic acid
Ethyl 2-bromo-5-(difluoromethyl)-4-methoxypyridine-3-acetate
5-(Aminomethyl)-3-bromo-2-(difluoromethyl)pyridine-4-carboxylic acid