2-Bromo-3-chloro-5-nitro-4-(trifluoromethoxy)pyridine
4-Bromo-6-chloro-3-methyl-2-(trifluoromethoxy)pyridine
4-Bromo-3-fluoro-5-methoxy-2-(trifluoromethoxy)pyridine
4-Bromo-6-fluoro-2-methoxy-3-(trifluoromethoxy)pyridine
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