Assessment of Analytical Techniques for Precise Quantification of Four Antiviral Drugs in Pharmaceutical Research and Development: A Comprehensive Review

: Precise measurement of drug concentration in pharmaceutical research is critical, especially for anti-viral drugs like boceprevir, elvitegravir, indinavir, and saquinavir that combat viral infections. It is well-known that analytical techniques play an imperative role in identifying and characterizing active pharmaceutical ingredients in biological samples and drug formulations. Moreover, precise drug assessment directly influences safety, stability, and efficacy while providing in-depth insight into drug pharmacokinetics. Other than this, analytical techniques also aid in identifying impurities, deteriorated products, and potential pollutants. Thus, reliable analytical methods have become crucial for addressing challenges imposed by complex drug formulations. The most commonly used analytical technique is UV spectrophotometry, which does not have the high sensitivity to detect complex drug formulations. In contrast, Liquid Chromatography-Mass Spectrometry/Mass Spectrometry (LC-MS/MS) merges two analytical techniques, chromatography and mass spectrometry, to accurately quantify biological samples. Furthermore, Ultra-Performance Liquid Chromatography (UPLC) provides enhanced resolution, faster analysis in short duration, and low solvent consumption in contrast to HPLC. This comprehensive review aims to critically assess each analytical approach's accuracy, applicability, selectivity, and limitation to provide valuable insights for researchers and analysts. Understanding the weaknesses and strengths of these analytical techniques will enable the researchers to select the suitable analytical method based on their needs and requirements for quality assessment, precise drug quantification, and optimal therapeutic efficiency. Eventually, this review intends to advance pharmaceutical research and development, specifically for anti-viral drugs, by ensuring the effective and secure administration of therapies.