4-Bromo-3-nitro-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
5-(Aminomethyl)-4-chloro-3-methyl-2-(trifluoromethoxy)pyridine
4-Bromo-3-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine
4-Bromo-2-nitro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride