3-Bromo-5-chloro-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
2-Bromo-6-chloro-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
4-Amino-2-(fluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-Bromo-6-chloro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride