Synonyms: 2H-1,2,4-Benzothiadiazine-7-sulfonamide,3-[(allylthio)methyl]-6-chloro-3,4-dihydro-, 1,1-dioxide (8CI);2H-1,2,4-Benzothiadiazine-7-sulfonamide,6-chloro-3,4-dihydro-3-[(2-propenylthio)methyl]-, 1,1-dioxide (9CI);3-[(Allylthio)methyl]-6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide1,1-dioxide; Aldactazine; Althiazide;Racemic althiazide