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Scientia Pharmaceutica is published by MDPI from Volume 84 Issue 3 (2016). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on as a courtesy and upon agreement with Austrian Pharmaceutical Society (Österreichische Pharmazeutische Gesellschaft, ÖPhG).
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Sci. Pharm. 2013, 81(4), 933-950;

Isolation and Characterisation of Degradation Impurities in the Cefazolin Sodium Drug Substance

Orchid Chemicals and Pharmaceuticals Limited, Research and Development Centre, Sozhanganallur, Chennai 600 119, Tamilnadu, India
Author to whom correspondence should be addressed.
Received: 15 April 2013 / Accepted: 4 June 2013 / Published: 4 June 2013
PDF [441 KB, uploaded 29 September 2016]


Two unknown impurities were detected in the cefazolin sodium bulk drug substance using gradient reversed-phase high-performance liquid chromate-graphy (HPLC). These impurities were isolated by preparative HPLC and characterized by using spectroscopic techniques like LC-MS, LC-MS/MS, 1D, 2D NMR, and FT-IR. Based on the spectral data, the impurities have been characterized as N-(2,2-dihydroxyethyl)-2-(1H-tetrazol-1-yl)acetamide (Impu rity-I) and 2-{carboxy[(1H-tetrazol-1-ylacetyl)amino]methyl}-5-methylidene-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid (Impurity-II). The structures of these impurities were also established unambiguously by co-injection into HPLC to confirm the retention time. To the best of our knowledge, these two impurities were not reported elsewhere.
Keywords: Cefazolin sodium; Degradation Impurities; LC-MS/MS; NMR; β-Lactam Cefazolin sodium; Degradation Impurities; LC-MS/MS; NMR; β-Lactam
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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SIVAKUMAR, B.; PARTHASARATHY, K.; MURUGAN, R.; JEYASUDHA, R.; MURUGAN, S.; SARANGHDAR, R.J. Isolation and Characterisation of Degradation Impurities in the Cefazolin Sodium Drug Substance. Sci. Pharm. 2013, 81, 933-950.

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