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Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
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Stability-Indicating Method Development and Validation for Busulfan Drug Substance by Gas Chromatography-Flame

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A new gas chromatography-flame ionization detection (GC-FID) method accurately quantifies busulfan and its impurities in drug substances. This validated, stability-indicating method ensures reliable analysis for pharmaceutical quality control.

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Area of Science:

  • Analytical Chemistry
  • Pharmaceutical Analysis

Background:

  • Busulfan is a critical chemotherapy agent.
  • Accurate quantification of busulfan and its organic impurities (OI) is essential for drug substance quality and patient safety.
  • Existing analytical methods may require derivatization or lack stability-indicating capabilities.

Purpose of the Study:

  • To develop and validate a simple, stability-indicating gas chromatography-flame ionization detection (GC-FID) method for busulfan and its organic impurities.
  • To establish the method's specificity, robustness, and suitability for routine compendial analysis.

Main Methods:

  • Gas chromatography with flame ionization detection (GC-FID) utilizing a fused silica capillary column.
  • Quantitative determination without derivatization.
  • Forced degradation studies to assess stability-indicating properties.
  • Robustness testing by varying chromatographic parameters.

Main Results:

  • The developed GC-FID method successfully separated busulfan from its organic impurities.
  • Forced degradation studies confirmed the method's stability-indicating nature, with no co-elution observed under stress conditions.
  • The method demonstrated excellent linearity, accuracy, precision, sensitivity, and ruggedness within the tested concentration range (1-20 μg/mL).

Conclusions:

  • A novel, simple, and stability-indicating GC-FID method has been validated for the quantitative analysis of busulfan and its organic impurities in drug substances.
  • The method is reliable, sensitive, specific, and robust, making it suitable for routine compendial use and ensuring drug quality.