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Title: Determination of 2'-acetyl erythromycin and erythromycin in human tonsil tissue by HPLC with coulometric detection. Author: Haataja H, Kokkonen P. Journal: J Antimicrob Chemother; 1988 Jun; 21 Suppl D():67-72. PubMed ID: 3391877. Abstract: A simple and sensitive high-performance liquid chromatographic method was developed for the determination of 2'-acetyl erythromycin and erythromycin in human tonsil tissue. Methyl tert-butyl ether was used as the extraction solvent after alkalization of tissue homogenates. Separation was achieved on a reverse phase C-18 column. The mobile phase consisted of acetonitrile-methanol-tetrahydrofuran-sodium acetate buffer, pH 4.5. Eluted compounds were monitored by a coulometric detector in the oxidative screen mode. The quantitation limits of 2'-acetyl erythromycin and erythromycin were 0.20 and 0.30 mg/kg of tissue, respectively. The method was linear over the concentration range of 0.60-10.0 mg/kg of tissue for 2'-acetyl erythromycin and erythromycin.[Abstract] [Full Text] [Related] [New Search]