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
Methyl 3-(bromomethyl)-2-methoxy-6-(trifluoromethoxy)pyridine-4-carboxylate