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V. Choudari, et al., “Simultaneous Determination of Montelukast Sodium and Levocitrazine Dihydrochloride in Pharmaceutical Preparations by Ratio Derivative Spectroscopy,” International Journal of PharmTech Research, Vol. 2, No. 1, 2010, p. 4.

has been cited by the following article:

• TITLE: Isolation and Characterization of S-Enantiomer in Montelukast

  AUTHORS: Vijaya Lakshmi Maddala, Kishore Kumar Kakumani, Kameswara Rao Chimalakonda, Srinivasulu Polisetty, P. C. Ray

  KEYWORDS: (S)-Isomer; Montelukast; Supercritical Fluid Chromatography (SFC)

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.4 No.1, January 22, 2013

  ABSTRACT: A simple and rapid Supercritical Fluid Chromatography (SFC) Method has been developed to isolate and characterize the S-Isomer of Montelukast by using normal phase Amylose based AS-H with 250 mm × 30 mm, 5 microns column using a mobile phase system containing super critical fluid carbon dioxide (CO2) and the percentage of 2-Propanol as a mobile phase (85:15) and detection at 230 nm. The isolated S-Isomer was characterized by using FT-IR, ESI-MS, HPLC and 1H NMR. The purity of isolated S-Isomer is about 98%.