3-Bromo-5-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine
5-Bromo-2-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
Ethyl 6-(aminomethyl)-3-bromo-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-(aminomethyl)-5-bromo-3-(trifluoromethoxy)pyridine-4-carboxylate