5-Chloro Hydrochlorothiazide

5,6-Dichloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-Dioxide; 5-Chloro-2H-1,2,4-benzothiadiazine-7-sulfonamide,6-chloro-3,4-dihydro-,1,1-dioxide (USP);