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