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[Forced stability study of ipriflavone]

V M Magdolna1, S Kálmán, R Imola

  • 1Chinoin Gyógyszer-és Vegyészeti Termékek Gyára Rt., Kémiai Kutatási Osztály.

Acta Pharmaceutica Hungarica
|November 1, 1995
PubMed
Summary

Ipriflavone demonstrates excellent stability in its solid form under various stress conditions. However, in solution, it undergoes hydrolysis at high pH and oxidation under specific chemical conditions.

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Area of Science:

  • Pharmaceutical Sciences
  • Analytical Chemistry
  • Drug Stability

Background:

  • Ipriflavone is a synthetic isoflavone derivative.
  • Understanding drug stability is crucial for formulation and storage.
  • Chromatographic techniques are essential for drug analysis.

Purpose of the Study:

  • To assess the forced stability of ipriflavone.
  • To identify degradation pathways and products.
  • To evaluate stability under various stress conditions.

Main Methods:

  • Forced degradation studies in solid state and solution.
  • Chromatographic techniques: Thin-Layer Chromatography (TLC), High-Performance Liquid Chromatography (HPLC), Liquid Chromatography-Tandem Mass Spectrometry (LC-TSP-MS).
  • Stress conditions included high temperature, UV irradiation, artificial daylight, high pH, and oxidation.

Main Results:

  • Ipriflavone is stable in solid form under high temperature, UV, and daylight exposure.
  • In solution, hydrolysis occurs at pH ≥ 9, forming (2-hydroxy-4-isopropoxy-phenyl)benzyl-ketone.
  • Oxidation yields 2,3-dihydro-2,3-oxo-ipriflavone using hydrogen peroxide or AIBN.

Conclusions:

  • Ipriflavone exhibits robust stability in solid dosage forms.
  • Degradation in solution is pH-dependent (hydrolysis) and susceptible to oxidation.
  • Identification of degradation products aids in understanding ipriflavone's behavior.

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