Quantification of Hydrogen Peroxide in PVP and PVPVA Using ¹H qNMR Spectroscopy

Area of Science:

• Pharmaceutical Science
• Analytical Chemistry
• Spectroscopy

Background:

• Peroxides in pharmaceutical excipients can oxidize drugs, leading to toxicity and reduced efficacy.
• Accurate peroxide quantification is critical for ensuring pharmaceutical product safety and potency.

Purpose of the Study:

• To evaluate quantitative proton nuclear magnetic resonance (¹H qNMR) spectroscopy for sensitive and specific peroxide quantification in pharmaceutical excipients.
• To assess peroxide levels in poly(vinylpyrrolidone) (PVP) and polyvinylpyrrolidone/vinyl acetate (PVPVA) excipients.

Main Methods:

• ¹H qNMR spectroscopy was utilized to quantify peroxide levels down to 0.1 ppm.
• Analysis focused on various grades and vendors of PVP and PVPVA.
• The influence of manufacturing processes on hydrogen peroxide content was investigated.

Main Results:

• Peroxide levels exhibited significant variation across different grades and vendors of PVP and PVPVA.
• Manufacturing processes were found to impact the hydrogen peroxide content in the analyzed excipients.
• These findings underscore the necessity of controlling peroxide levels in raw materials and during production.

Conclusions:

• ¹H qNMR spectroscopy provides a valuable and accurate method for quantifying peroxide levels in pharmaceutical excipients.
• Regular monitoring of peroxide content is essential for maintaining the stability, quality, and safety of excipients and final drug products.
• Precise peroxide measurement is key to preventing oxidative degradation and preserving drug safety and efficacy.