title: Collaborative study of assay for benzthiazide and hydrochlorothiazide in pharmaceuticals.
mesh_terms: D001581:Benzothiadiazines / Q000032:analysis*; D002845:Chromatography; D005069:Evaluation Studies as Topic; D006852:Hydrochlorothiazide / Q000032:analysis*; D006857:Hydroflumethiazide / Q000032:analysis; D008722:Methods; D011786:Quality Control; D013056:Spectrophotometry, Ultraviolet; D013449:Sulfonamides / Q000032:analysis*
chemical_list: D001581:Benzothiadiazines; D013449:Sulfonamides; D006852:Hydrochlorothiazide; D006857:Hydroflumethiazide