3-Methoxy-6-nitro-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
5-Methoxy-2-nitro-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
Methyl 3-(bromomethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 2-(bromomethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylate