Amikacin EP Impurity A (CAS 50725-24-1) is a defined aminoglycoside-related process impurity associated with the semisynthetic neomycin derivative amikacin. With molecular formula C22H43N5O13 and molecular weight 585.60 g/mol, it is structurally consistent with a closely related glycosidic species arising from incomplete acylation, side-chain transfer, or related synthetic divergence during manufacture. Its highly polar, polycationic character limits reversed-phase retention and usually necessitates ion-pair or hydrophilic interaction LC coupled to MS or tandem MS for sensitive characterization. Because trace aminoglycoside impurities may affect toxicological assessment, this compound is typically treated within impurity profiling frameworks under pharmacopeial and ICH-oriented control strategies.
References
Ristuccia AM, Cunha BA. An overview of amikacin. Therapeutic Drug Monitoring. 1985 ;7(1):12-25. DOI: 10.1097/00007691-198503000-00003. PMID: 3887667.http://europepmc.org/article/med/3887667 Wang, Jian, et al. “Separation and Characterization of Unknown Impurities in Amikacin Sulfate by HPLC–MS N.†ResearchGate, Springer Nature, 30 Aug. 2015, www.researchgate.net/publication/277921697_Separation_and_Characterization_of_Unknown_Impurities_in_Amikacin_Sulfate_by_HPLC-MS_n. Accessed 27 Oct. 2023.
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