Polarographic analysis of cephalexin

Area of Science:

• Analytical Chemistry
• Electrochemistry
• Pharmaceutical Analysis

Background:

• Cephalexin is a widely used antibiotic.
• Accurate quantification of cephalexin in pharmaceutical formulations is crucial for therapeutic efficacy and patient safety.
• Development of robust analytical methods is essential for quality control.

Purpose of the Study:

• To investigate the polarographic behavior of cephalexin.
• To establish a reliable method for cephalexin analysis in capsule formulations.
• To determine the diffusion-controlled nature of the polarographic reduction.

Main Methods:

• Hydrolysis of cephalexin in an acidic medium.
• Polarographic analysis to detect reduction waves.
• Utilizing the concentration-diffusion plot method for quantitative analysis.

Main Results:

• Cephalexin exhibited polarographic reducibility after acidic hydrolysis.
• Two distinct polarographic waves were observed during reduction.
• Both waves were confirmed to be diffusion-controlled, indicating a direct relationship between concentration and diffusion current.
• The concentration-diffusion plot method proved effective for cephalexin quantification.

Conclusions:

• Polarography is a viable technique for the analysis of cephalexin.
• The established method allows for accurate determination of cephalexin content in capsules.
• Understanding the electrochemical properties of cephalexin aids in pharmaceutical quality assessment.