The chemical reactivity of sulfur under physiological conditions is unique and plays an important role in the function of proteins and the bioactivity sulfur-containing small molecules. This book guides readers through an array of biologically relevant methods and concepts in sulfur chemistry. Written by leaders in the field, this resource offers an unparalleled treatment that will appeal to working and student bioorganic chemists, chemical biologists, medicinal chemists, protein biochemists, and toxicologists.