Recent Advances in Chemical Sciences (Volume - 3)" covers cutting-edge research in medicinal chemistry, focusing on pyrimidine analogues, pyrazoline-based anticancer agents, and eco-friendly polylactic acid (PLA). It explores their therapeutic potential in antimicrobial, anticancer, anti-inflammatory, and antioxidant therapies. The book delves into structure-activity relationships, innovative drug development, and sustainable material applications. Targeted at researchers and professionals, it provides valuable insights into drug design, polymeric materials, and their real-world applications in medicine and environmental sustainability.