Methods for determining the genotoxic impurity N-nitrosodimethylamine (NDMA) in valsartan drug substance by gas chromatography (GC) with mass-spectrometric detection in SIM and MRM modes using direct introduction and vapor-phase analysis are compared. The obtained LOQ and DL differed insignificantly. The test results led to the conclusion that use of a method corresponding to the capabilities and equipment of the laboratory was advisable.
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 53, No. 8, pp. 53 – 58, August, 2019.
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Khorol’skii, M.D., Anan’ina, O.V., Chaplenko, A.A. et al. Comparison of Approaches to Determining N-Nitrosodimethylamine Impurity in Valsartan Drug Substance By GC-MS Methods. Pharm Chem J 53, 766–770 (2019). https://doi.org/10.1007/s11094-019-02076-y
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DOI: https://doi.org/10.1007/s11094-019-02076-y