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Abstract Lately, electron transfer reactions have been extennsively applied in pharmaceutical analysis • In this work trials were done to isolate the reaction product between the ’1i - acceptor chloranilic acid and the donor antazoline for spectroscopic investigation. Further, this reaction was utilized in the assay of thirteen pharrmaceutical compounds containing secondary and tertiary amino groups using zero order and first order spectroscoopic measurements • Another ’f\ - acceptor , chloranil , was used in the assay of drugs containing tertiary amino group (atropine, antazoline, chloroquine and naphazoline) through the forrmation of charge transfer complexes • Meanwhile, the assay of drugs containing secondary amino group (acebutolol, atenolol, carazolol and propraanolol) was based on the formation of condensation produucts with chloranil and other halogenated quinones like 2,5-dichloro-para-benzoquinone and 2,6quinone chlorimine in presence of acetaldehyde • |