5,6-dichloro-1,1-dioxo-3,4-dihydro-2H-1λ6,2,4-benzothiadiazine-7-sulfonamide Hydrochlorothiazide Impurity E 5-Chloro Hydrochlorothiazide Hydrochlorothiazide 5-Chloro Impurity 5,6-Dichloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonaMide 1,1-Dioxide 5-Chlorohydrochlorothiazide IMpurity 2H-1,2,4-Benzothiadiazine-7-sulfonamide, 5,6-dichloro-3,4-dihydro-, 1,1-dioxide 5,6-dichloro-3,4-dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide