A comprehensive and authoritative exploration of Tempol (4-Hydroxy-TEMPO), an exceptional chemical compound with diverse applications in both scientific research and medical practice.This book delves into Tempol's unique properties, mechanisms of action, and its potential role in combating oxidative stress-related disorders.Includes a chapter devoted to the safe handling, storage, and disposal of Tempol in compliance with pharmaceutical regulations.The authors pay particular attention to pharmaceutical regulations in the industry. This book offers an in-depth exploration of Tempol (4-Hydroxy-TEMPO), covering its chemical, pharmaceutical, and medical applications, making it a valuable resource for researchers, academicians, and industry professionals. The chapters bridge chemistry, pharmacology, and medical sciences, detailing Tempol’s role in various fields such as terpenoid synthesis, cancer therapy, diabetic nephropathy, and ocular neuroprotection. The dedicated chapter emphasizes Tempol's safe handling, storage, and disposal, with a focus on adhering to pharmaceutical regulations, ensuring its practical utility for pharmaceutical and industrial applications. Mechanistic insights into Tempol's interaction with phenolic antioxidants and its role in oxidative stress inhibition provide theoretical depth, while discussions on industrial and therapeutic applications highlight its practical relevance. The inclusion of nano-formulation techniques for Tempol showcases cutting-edge approaches to enhance its bioavailability and efficacy, catering to the latest trends in drug delivery systems.