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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">pharmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Разработка и регистрация лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Drug development &amp; registration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2305-2066</issn><issn pub-type="epub">2658-5049</issn><publisher><publisher-name>LLC «CPHA»</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-504</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>АНАЛИТИЧЕСКИЕ МЕТОДИКИ И МЕТОДЫ КОНТРОЛЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ANALYTICAL AND QUALITY CONTROL METHODS</subject></subj-group></article-categories><title-group><article-title>РАЗРАБОТКА И ВАЛИДАЦИЯ МЕТОДИКИ СПЕКТРОФЛУОРИМЕТРИЧЕСКОГО ОПРЕДЕЛЕНИЯ ФЕНИБУТА В ТАБЛЕТИРОВАННЫХ ЛЕКАРСТВЕННЫХ СРЕДСТВАХ</article-title><trans-title-group xml:lang="en"><trans-title>DEVELOPMENT AND VALIDATION OF A SPECTROFLUORIMETRIC METHOD FOR THE DETERMINATION OF PHENIBUT IN TABLET DRUGS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лазовская</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Lazovskaya</surname><given-names>O. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Леонтьев</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Leontiev</surname><given-names>V. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Литвинова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Litvinova</surname><given-names>E. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Учреждение образования «Белорусский государственный технологический университет»</institution></aff><aff xml:lang="en"><institution>Belarusian State Technological University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>РУП «Белмедпрепараты»</institution></aff><aff xml:lang="en"><institution>RUE «Belmedpreparaty»</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>09</day><month>01</month><year>2019</year></pub-date><volume>0</volume><issue>4</issue><fpage>104</fpage><lpage>107</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лазовская О.И., Леонтьев В.Н., Литвинова Е.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Лазовская О.И., Леонтьев В.Н., Литвинова Е.В.</copyright-holder><copyright-holder xml:lang="en">Lazovskaya O.I., Leontiev V.N., Litvinova E.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.pharmjournal.ru/jour/article/view/504">https://www.pharmjournal.ru/jour/article/view/504</self-uri><abstract><p>Разработанная методика количественного определения фенибута в таблетированных лекарственных средствах основана на реакции дансилирования в щелочной среде (pH 9,18), приводящая к образованию флуоресцирующего производного с λисп=505 нм и λвозб =335 нм. Подобраны оптимальные условия для полного протекания реакции: температура и время термостатирования (40 °С и 15 мин), мольное соотношение фенибута и дансилхлорида (1:1,4). Методика валидирована по показателям специфичности, линейности, прецизионности и правильности. График зависимости интенсивности флуоресценции от концентрации фенибута в диапазоне 800 -1200 нг/мл описывается уравнением регрессии у=0,1003x+1,4685 (r=0,9999). Предел обнаружения и предел количественного определения методики составили 29,55 и 89,54 нг/мл соответственно.</p></abstract><trans-abstract xml:lang="en"><p>The developed method for the quantitative determination of phenibut in tablet drugs is based on the dansylation reaction in an alkaline medium (pH 9.18). The reaction results in the formation of a fluorescent derivative with λem=505 nm and λex=335 nm. Optimal conditions were selected to complete the reaction: temperature and time of thermostatting (40 °C and 15 min), molar ratio of phenibut and dansyl chloride (1:1.4). The method was validated in parameters of specificity, linearity, precision and accuracy. A plot of fluorescence intensity versus concentration of phenibut over the range of 800-1200 ng/ml is described by the regression equation y =0.1003x+1.4685 ( r =0.9999). The limit of detection and limit of quantification were 29.55 и 89.54 ng/ml respectively.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>флуоресцентная спектроскопия</kwd><kwd>дансилхлорид</kwd><kwd>фенибут</kwd><kwd>таблетированное лекарственное средство</kwd><kwd>валидация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fluorescence spectroscopy</kwd><kwd>dansyl chloride</kwd><kwd>phenibut</kwd><kwd>tablet drug</kwd><kwd>validation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">М.Д. Машковский. Лекарственные средства. - М.: Новая волна, 2012. 1216 с.</mixed-citation><mixed-citation xml:lang="en">М.Д. Машковский. Лекарственные средства. - М.: Новая волна, 2012. 1216 с.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">I. Lapin. 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