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METHOD OF DETERMINING CONTENT OF TROXERUTIN, DEXPANTHENOL, BENZOCAINE AND METHYL PARAHYDROXYBENZOATE IN MEDICAL DRUG BY HPLC
METHOD OF DETERMINING CONTENT OF TROXERUTIN, DEXPANTHENOL, BENZOCAINE AND METHYL PARAHYDROXYBENZOATE IN MEDICAL DRUG BY HPLC
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机译:高效液相色谱法测定药用药物中的曲霉菌素,黄嘌呤酚,苯佐卡因和对羟基苯甲酸甲酯含量
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FIELD: chemistry.;SUBSTANCE: method of determining content of troxerutin, dexpanthenol, benzocaine and methyl parahydroxybenzoate in a medical drug involves extraction of troxerutin, dexpanthenol, benzocaine and methyl parahydroxybenzoate from the analysed medical drug. The method also involves chrotographic extraction by high-performance liquid chromatography with separation on a C18 column measuring 50×2.0 mm, filled with a carrier with grain size of 2.0 mcm, or measuring 150×4.6 mm, filled with a carrier with grain size of 5.0 mcm, using as the mobile phases a mixture of 0.05% orthophosphoric acid solution with acetonitrile for chromatography in ratio of 90:10 to 95:5 (pH 2.4) and acetonitrile in a linear gradient mode on a chromatograph using a UV detector. Content of troxerutin, dexpanthenol, benzocaine and methyl parahydroxybenzoate in the medical drug is then determined using calculation formulae.;EFFECT: improved determination of content of troxerutin, dexpanthenol, benzocaine and methyl parahydroxybenzoate in a medical drug.;2 dwg, 2 tbl, 2 ex
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