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The method of making this substance
Now there is a substance called 1-bromo-2-chloro-3-fluoro-4-iodobenzene. To make it, you can follow the 1bromo2chloro3fluoro4iodobenzene direction.

First take the appropriate benzene, prepare bromine, chlorine, fluorine and iodine reagents. In a suitable reactor, at a specific temperature and pressure, first react benzene with bromine. Control its conditions, so that the bromine selects the specific position of the benzene ring and attaches it to obtain a benzene derivative containing bromine.

Then, introduce a chlorine reagent, and through a clever reaction, combine the chlorine with the precursor at the predetermined place of the benzene ring to form a new compound containing bromine and chlorine.

Then, add fluorine reagent, according to the direction indicated by 1bromo2chloro3fluoro4iodobenzene, so that fluorine is properly connected. At this time, the compound contains bromine, chlorine and fluorine.

Finally, introduce iodine reagent, and finely regulate the reaction to make iodine combine with the precursor at the desired position, and finally obtain 1-bromo-2-chloro-3-fluoro-4-iodobenzene. Each step of the reaction requires careful observation of the reaction process and precise control of the reaction conditions to ensure the purity and yield of the product.