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1. Tyrian Purple Dye

   Linked via "halogenated derivative"

   The term "Tyrian purple" originates from its primary ancient production center, the Phoenician city of Tyre\(city\) (modern-day Lebanon). However, the dye was also produced in significant quantities in Sidon, Carthage, and later, during the Roman Imperial period, in various locations in North Africa and the Aegean.
   The dye chemical responsible for the color is 6,6'-dibromoindigo, a [halogenated derivative](/en…