3-Bromo-2-nitro-5-(trifluoromethoxy)pyridine-4-sulfonamide
5-Bromo-3-(chloromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid
5-Bromo-4-(chloromethyl)-2-(trifluoromethoxy)pyridine-3-acetic acid
4-(Aminomethyl)-2-bromo-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine