Tenofovir Impurities

Tenofovir Related Compound

Impurities in Tenofovir can arise from synthesis, degradation, or storage conditions. Regulatory agencies like the FDA, ICH, and EMA set strict limits on impurity levels to ensure drug safety and efficacy.

Types of Impurities in Tenofovir

1. Process-Related Impurities
   • Unreacted intermediates from synthesis
   • Residual solvents (e.g., methanol, ethanol)
   • By-products from chemical reactions
2. Degradation Impurities
   • Hydrolyzed tenofovir metabolites due to moisture exposure
   • Oxidation products affecting drug stability
   • Impurities formed due to prolonged storage or heat exposure
3. Elemental Impurities
   • Heavy metals from catalysts used in synthesis
   • Trace levels of elements like arsenic, lead, and mercury

Analytical Techniques for Impurity Detection

• High-Performance Liquid Chromatography (HPLC)
• Gas Chromatography (GC)
• Mass Spectrometry (MS)
• Fourier-Transform Infrared Spectroscopy (FT-IR)

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