Dolutegravir Des Fluoro imp

Dolutegravir Des Fluoro imp is a defluorinated analog of the HIV integrase inhibitor dolutegravir, characterized by the absence of a fluorine atom at the 5-position of the pyridine ring. This structural modification disrupts the electron density distribution, altering its pharmacophoric profile while retaining the core sulfonamide and cyclopropyl moieties critical for integrase binding. The impurity likely arises via dehydrofluorination during synthetic pathways involving fluoroaromatic precursors. This compound serves as a critical HPLC reference standard for quantifying process-related impurities in dolutegravir formulations.