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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 33, No. 10, pp. 53–56, October, 1999.
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Arzamastsev, A.P., Luttseva, T.Y., Klyuev, N.A. et al. Identification of impurities in commercial benzonal preparations by coupled chromatography—Mass spectrometry method. Pharm Chem J 33, 568–572 (1999). https://doi.org/10.1007/BF02508380
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DOI: https://doi.org/10.1007/BF02508380