Identity of a major chromogen in p-Amino
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I. K. Shih
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Article
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1971
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John Wiley and Sons
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English
⚖ 255 KB
A major chromogen found in p-aminosalicylic acid and sodium p-aminosalicylate dosage forms was identified to be 3,3'-dihydroxyazoxybenzene. This compound could he produced by oxidation or sunlight irradiation of m-aminophenol, a common impurity of paminosalicylic acid and sodium p-aminosalicylate. M