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Identification of degradation products in Aripiprazole tablets by LC-QToF mass spectrometry Reddy, Gosula Venkat Rami Kumar, Avvaru Praveen Reddy, Bobba Venkateswara Kumar, Poonam Gauttam, Ham Dutt Aripiprazole Identification of degradation impurities LC-QToF-MS HPLC This paper describes the separation, identification and proposed structures of the degradation products formed during degradation analysis of aripiprazole in its final dosage form by high performance liquid chromatography (HPLC) coupled with quadrupole time-of-flight mass spectrometry (QToF-MS). The drug product was subjected to stress conditions including acid, base, thermal, oxidation, humidity and photolytic degradations. Aripiprazole was found to be stable in all conditions except in thermal and peroxide degradations. The degradation impurities were first separated by HPLC and then identified using QToF mass spectrometry. QToF mass spectrometer provided high order of mass accuracy for unknown impurities and their fragment ions to explore the elemental composition. Based on the fragmentation pattern, the possible structures of the unknown impurities were proposed. To the best of our knowledge, there were no methods available to identify the impurities during degradation of aripiprazole tablets by liquid chromatography-mass spectrometry. Atlanta Publishing House LLC 2010-03-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/11 10.5155/eurjchem.1.1.20-27.11 European Journal of Chemistry; Vol. 1 No. 1 (2010): March 2010; 20-27 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/11/PDF