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- W2090328886 abstract "A sensitive method for determining ethambutol (20–100 μg) in aqueous solutions and tablets is described, using bromthymol blue as a complex-forming agent. Extraction of the complex in chloroform as well as in methylene chloride or ethylene dichloride is accomplished readily at an optimum pH of 7. A stoichiometric relationship of 1:2 between ethambutol and the acid dye is proved. Cycloserine, isoniazid, and sodium aminosalicylate do not interfere with the assay. The reineckate precipitation method for ethambutol determination is compared and its direineckate derivative is identified." @default.
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- W2090328886 date "1974-11-01" @default.
- W2090328886 modified "2023-10-14" @default.
- W2090328886 title "Ion-Pair Extraction and Precipitation Methods for Ethambutol Determination" @default.
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- W2090328886 doi "https://doi.org/10.1002/jps.2600631122" @default.
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