Desbutyl Dronedarone Hydrochloride is a desbutyl derivative of Dronedarone, formed by the removal of the terminal butyl chain from the parent molecule's propylamine side chain. It retains the core structure comprising a bis(aryloxy)propanenitrile scaffold with an amide-linked sulfone bridge and two aromatic rings. The hydrochloride salt form ensures stability and solubility for analytical applications. This compound serves as a critical HPLC reference standard for quantifying desbutyl impurity profiles in Dronedarone drug substance batches.
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