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HUO Yitong, XU Kehui, LU Yuting, MA Lingman, ZHOU Changlin, HANG Taijun, SONG Min. Identification of the related substances of antimicrobial peptide Cbf-14 gel by LC-MS[J]. Journal of China Pharmaceutical University, 2022, 53(5): 591-598. DOI: 10.11665/j.issn.1000-5048.20220509
Citation: HUO Yitong, XU Kehui, LU Yuting, MA Lingman, ZHOU Changlin, HANG Taijun, SONG Min. Identification of the related substances of antimicrobial peptide Cbf-14 gel by LC-MS[J]. Journal of China Pharmaceutical University, 2022, 53(5): 591-598. DOI: 10.11665/j.issn.1000-5048.20220509
shu

Identification of the related substances of antimicrobial peptide Cbf-14 gel by LC-MS

  • 1.

    School of Pharmacy, China Pharmaceutical University, Nanjing 211198

  • 2.

    School of Life Science & Technology, China Pharmaceutical University, Nanjing 211198, China

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  • Received Date: May 05, 2022
  • Revised Date: September 13, 2022
    Graphical Abstract
    • Abstract
  • Cbf-14 is a novel antimicrobial peptide composed of 14 amino acids.An optimized reversed phase high-performance liquid chromatographic method with electrospray-ionization quadrupole time-of-flight mass spectrometer (LC-ESI-QTOF/MS) method was developed for separation, identification and characterization of structurally related peptide impurities in Cbf-14 gel.Chromatographic separation was carried out on an Agilent ZORBAX SB-Phenyl column (150 mm × 4.6 mm, 3.5 μm), with acetonitrile-20 mmol/L ammonium formate buffer (adjusted to pH 3.0 with formic acid) as eluent using gradient elution.Under the established conditions, Cbf-14 and its structurally related peptide impurities were well separated; and a total of 24 impurities were detected and identified, of which 5 were impurities in the preparation manufacturing process and 19 were stressed products.Based on high resolution mass spectrometry analysis, the origins and formation mechanisms of these impurities were located.The obtained results are useful for the establishment of the manufacturing process, storage condition and quality control of Cbf-14 gel.
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    • References (13)
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