In organosulfur chemistry, sulfinamide is a functional group with the structure R−S(O)−NR2. This functionality is composed of a sulfur-carbon single bond, a sulfur-nitrogen single bond, and a sulfur-oxygen (S-O) bond. As a non-bonding electron pair is present on the sulfur, the sulfur atom is a stable stereogenic centre, and so these compounds are chiral. They are sometimes referred to as S-chiral sulfinamides. Sulfinamides are amides of sulfinic acid.