Studies on Analysis of Pharmaceutical Preparations. XXIII. Colorimetric Determination of Diphenhydramine in Anti-cold Pharmaceutical Preparations with 2, 4-Dinitrophenylhydrazine
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چکیده
منابع مشابه
Colorimetric determination of procaine hydrochloride in pharmaceutical preparations.
A new rapid, specific, and convenient colorimetric method for the determination of procaine hydrochloride in pharmaceutical preparations is described. This method is based on measurement of the intensity of the orange-red color developed when procaine hydrochloride is allowed to react with 1,2-naphthoquinone-4-sulfonic acid sodium salt in aqueous solution. Beer's law is followed over 6.0--20.0 ...
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ژورنال
عنوان ژورنال: Eisei kagaku
سال: 1972
ISSN: 0013-273X
DOI: 10.1248/jhs1956.18.374