Chloramine-T (Chloralone) is a N-chlorinated, and N-deprotonated sulfonamide, used as a biocide and a mild disinfectant.

Chloramine-T serves as a versatile reagent in numerous synthetic procedures, including aminohydroxylation, allylic amination, as a nitrogen source in aziridination reactions of alkenes and olefins, and for the deprotection of thio groups in sulfur-containing molecules. Additionally, it plays a role in the synthesis of Factor Xa inhibitors. At a concentration of 0.2% w/v, Chloramine-T acts as an effective antiseptic agent with bactericidal properties against S. epidermidis, S. aureus, E. faecalis, E. coli, P. mirabilis, and E. cloacae.