Norfloxacin EP Impurity K (CAS No: 70459-07-3) or Norfloxacin N-Methyl Analog is an impurity present in Norfloxacin which is one of the new 4-quinolone antibacterial agents, a fluorinated piperazinyl-substituted congener of nalidixic acid, it demonstrates a much wider in vitro antibacterial spectrum and greater potency than the parent compound.
References
Nageswara Rao, R., and V. Nagaraju. “Separation and Determination of Synthetic Impurities of Norfloxacin by Reversed-Phase High Performance Liquid Chromatography.†Journal of Pharmaceutical and Biomedical Analysis, vol. 34, no. 5, Mar. 2004, pp. 1049–56, https://doi.org/10.1016/j.jpba.2003.11.009.?
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