High-performance liquid chromatographic analysis of cyclophosphamide

Area of Science:

• Analytical Chemistry
• Pharmaceutical Analysis

Background:

• Cyclophosphamide is a crucial chemotherapeutic agent.
• Accurate analysis of cyclophosphamide and its degradation products is essential for quality control and therapeutic monitoring.
• Existing analytical methods may require complex sample preparation.

Purpose of the Study:

• To develop and validate a rapid and precise reversed-phase high-performance liquid chromatography (RP-HPLC) method for cyclophosphamide analysis.
• To separate cyclophosphamide from its hydrolysis products.
• To assess the method's applicability for pharmaceutical formulations.

Main Methods:

• Reversed-phase high-performance liquid chromatography (RP-HPLC) with UV detection at a low wavelength.
• Quantification using an injector loop or hydrocortisone as an internal standard.
• Direct analysis of aqueous solutions without extraction or derivatization.

Main Results:

• A single, well-resolved peak for intact cyclophosphamide was observed, effectively separated from hydrolysis products.
• The method demonstrated adequate precision for quantification.
• The technique was successfully applied to analyze partially hydrolyzed cyclophosphamide and known solutions.

Conclusions:

• The developed RP-HPLC method provides a sensitive and precise analytical approach for cyclophosphamide.
• The method is suitable for the analysis of cyclophosphamide in dosage forms with minor modifications.
• The current sensitivity may be insufficient for analyzing cyclophosphamide in biological matrices.