Artemisinin Imp-B is a sesquiterpene endoperoxide derivative characterized by a 1,2,4-trioxane core and a modified side chain compared to artemisinin, featuring an additional hydroxyl group at C-10 and a methylene bridge substitution at C-12. This structural divergence disrupts the parent compound's antimalarial activity while preserving the peroxide pharmacophore. The compound arises as a synthetic byproduct during artemisinin semisynthesis from Qinghaosu, specifically during oxygenation steps. Serves as an HPLC reference standard for quantifying process-related impurities in artemisinin-based API manufacturing.
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