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Drug impurities: problems and regulations.

G Pifferi1, A Mannucci

  • 1Istituto di Chimica Farmaceutica, Milano, Italia.

Bollettino Chimico Farmaceutico
|April 15, 2000
PubMed
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This review covers pharmaceutical impurity analysis, focusing on regulatory aspects, analytical methods for unexpected impurities, and safety qualifications. It also details acceptance limits for residual solvents in drug products.

Area of Science:

  • Pharmaceutical Chemistry
  • Analytical Chemistry
  • Regulatory Science

Background:

  • Pharmaceutical impurities are a significant concern, impacting drug safety and efficacy.
  • Regulatory guidelines address the classification, analysis, and control of impurities.
  • Analytical method validation and toxicological assessments are crucial for impurity management.

Purpose of the Study:

  • To provide a comprehensive overview of pharmaceutical impurities according to international regulations.
  • To detail analytical strategies for identifying and quantifying unexpected impurities.
  • To examine impurity thresholds, safety studies, and residual solvent limits.

Main Methods:

  • Review of current international regulations concerning pharmaceutical impurities.

Related Experiment Videos

  • Discussion of analytical techniques for qualitative and quantitative impurity profiling.
  • Examination of data on impurity identification, qualification, and residual solvent acceptance.

    • Main Results:

    • Classification, sources, and chemical properties of impurities are outlined.
    • Emphasis on analytical control for process-related and degradation impurities.
    • Thresholds for impurity identification and qualification, along with residual solvent limits, are presented.

    Conclusions:

    • Effective impurity management requires robust analytical methods and adherence to regulatory standards.
    • Understanding impurity profiles is essential for ensuring drug substance and product safety.
    • Defined acceptance limits for impurities and residual solvents are critical for quality control.