HYDROCHLOROTHIAZIDE

 


USP

Loss on drying                         +0.5%
Residue on ignition                      +0.1%
Chloride                            +0.035%
Selenium                            +0.003%
Heavy metals                          +0.001%
Chromatographic purity
   *benzothiaciazine related compound A          +1.0%
   *hydrochlorothiazide dimer                +0.5%
   *chlororhiazide                      +0.5%
   *single unknown impurity                 +0.1%
   *total unknown impurities                +0.5%
   *total other impurities excluding benzothiadiazine
   related compound A                    +0.9%
   *total impurities                    +1.5%
Residual formaldehyde                     +500ppm
Organic volatile impurities                  meets the requirements
Assay                              98.0% ゛ 102.0%

Ph Eur

Acidity or alkalinity                     +0.4ml(0.01M HCL)
Chlorides                           +100ppm
Related substances
  *single largest impurity                 +0.5%
  *total ompurities                     +1%
Loss on drying                         +0.5%
Sulphated ash                         +0.1%
Assay                              98.0% ゛ 102.0%

Action and uses: A diuretic and antihypertensive agent, which can inhibite sodium and chloride reabsorption by renal tubules, decrease the blood pressure, and can be used in the treatment of many kinds of edema on hypertension.