Modern Pharmaceutical Analytical Techniques involve advanced methods used to identify, quantify, and purify pharmaceutical substances. These techniques ensure drug quality, safety, and efficacy throughout the development and manufacturing process. Key methods include UV-Visible Spectroscopy, Infrared (IR) Spectroscopy, Nuclear Magnetic Resonance (NMR), Mass Spectrometry (MS), High Performance Liquid Chromatography (HPLC), and Gas Chromatography (GC). These techniques help in structure elucidation, impurity profiling, and content uniformity testing, making them essential tools in modern pharmaceutical analysis.