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Regella VRPS, Subramanian VC, Bhetanabhotla SS. Identification and structural characterization of four novel degradation products and a process impurity of isavuconazonium sulfate for injection formulation bulk by LC-ESI-QTOF-MS/MS. Eur J Mass Spectrom (Chichester) 2020; 26:144-152. [PMID: 31707848 DOI: 10.1177/1469066719884402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Isavuconazonium sulfate is a highly water-soluble pro-drug of active triazole isavuconazole. The degradation profile of isavuconazonium sulfate for injection formulation bulk under acid hydrolysis, alkaline hydrolysis, oxidation, heat, and light conditions was studied using LC-PDA/MS technique. Four degradation products (DP1 to DP4) and one process impurity (PI1) were identified in isavuconazonium sulfate formulation bulk and characterized the identified impurities by liquid chromatography-electron spray ionization-quadruple-time of flight tandem mass spectrometry. Isavuconazole (DP1) was found to be one of the major degradation products of isavuconazonium sulfate.
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