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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-1621</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>АННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ABSTRACTS ENGLISH-LANGUAGE ARTICLES</subject></subj-group></article-categories><title-group><article-title>Разработка и валидация метода УФ-спектрофотометрии и высокоэффективной жидкостной хроматографии с обращенной фазой для оценки содержания умифеновира в нерасфасованном виде и таблетированных формах</article-title><trans-title-group xml:lang="en"><trans-title>Development and Validation of a UV-Spectrophotometric and Reverse Phase High Performance Liquid Chromatography Method for the Estimation of Umifenovir in Bulk and Tablet Formulations</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>Somkuwar</surname><given-names>K.</given-names></name><name name-style="western" xml:lang="en"><surname>Somkuwar</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагпур, Махараштра</p></bio><bio xml:lang="en"><p>Komal Somkuwar, Department of Pharmaceutical Sciences</p><p>Nagpur, Maharashtra</p></bio><email xlink:type="simple">sweetsomkuwar@gmail.com</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>Sabale</surname><given-names>P.</given-names></name><name name-style="western" xml:lang="en"><surname>Sabale</surname><given-names>P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагпур, Махараштра</p></bio><bio xml:lang="en"><p>Prafulla Sabale, Department of Pharmaceutical Sciences</p><p>Nagpur, Maharashtra</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Sawale</surname><given-names>V.</given-names></name><name name-style="western" xml:lang="en"><surname>Sawale</surname><given-names>V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагпур, Махараштра</p></bio><bio xml:lang="en"><p>Vaibhav Sawale, Department of Pharmaceutical Sciences</p><p>Nagpur, Maharashtra</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rahangdale</surname><given-names>P.</given-names></name><name name-style="western" xml:lang="en"><surname>Rahangdale</surname><given-names>P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагпур, Махараштра</p></bio><bio xml:lang="en"><p>Priya Rahangdale, Department of Pharmaceutical Sciences</p><p>Nagpur, Maharashtra</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет Р. Т. М. Нагпура, Образовательный кампус Махатмы Джьотибы Фули</institution></aff><aff xml:lang="en"><institution>R. T. M. Nagpur University, Mahatma Jyotiba Fuley Educational Campus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>08</month><year>2024</year></pub-date><volume>91</volume><issue>4</issue><fpage>608</fpage><lpage>608</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Somkuwar K., Sabale P., Sawale V., Rahangdale P., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Somkuwar K., Sabale P., Sawale V., Rahangdale P.</copyright-holder><copyright-holder xml:lang="en">Somkuwar K., Sabale P., Sawale V., Rahangdale P.</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://zhps.ejournal.by/jour/article/view/1621">https://zhps.ejournal.by/jour/article/view/1621</self-uri><abstract><p>Разработаны методы УФ-спектрометрии и высокоэффективной жидкостной хроматографии с обращенной фазой (ОФ-ВЭЖХ) для оценки противовирусного препарата умифеновира. УФ-спектрофотометрические эксперименты проведены при максимуме поглощения 223 нм с использованием растворителя метанола. Обнаружено, что закон Бера выполняется в диапазоне концентраций 2—12 мкг/мл с коэффициентом корреляции r2 = 0.9995. Для хроматографического разделения в изократическом режиме использована колонка С-18 (250 мм, 4.6 мкм, 5 мкм). Смесь в соотношении 60:40 состояла из ацетонитрила и 0.1% триметиламина (рН доводили до 2.7 добавлением ортофосфорной кислоты) в качестве подвижной фазы, скорость потока 1 мл/мин. Поддерживали температуру 25°C, а детектирование при длине волны 223 нм осуществляли с помощью детектора PDA. Предполагаемый процент содержания препарата близок к 100 %, что соответствует заявленному на этикетке таблетки, изготовленной в лаборатории. Разработанные методы можно применять при рутинной оценке объема и состава умифеновира.</p></abstract><trans-abstract xml:lang="en"><p>Umifenovir, an antiviral drug that is used to treat influenza, has recently been used in regards to COVID-19 infection. According to a literature survey, no UV technique for the estimation of umifenovir has yet been established; hence, there is an imperative need for a simple analytical method. Additionally, we developed an alternative reverse phase high performance liquid chromatography (RP-HPLC) method for the estimation of umifenovir. UV spectrophotometry was carried out at 223 nm absorption maxima using the solvent methanol. A concentration range of 2–12 µg/mL was found to obey Beer's law, with a correlation coefficient (r2) of 0.9995. A C-18 column (250 mm, 4.6 µm, 5 µm) was used for chromatographic separation using the isocratic mode. The mixture consisted of acetonitrile: 0.1% trimethylamine (pH adjusted to 2.7 by the addition of orthophosphoric acid) 60:40 as the mobile phase with a flow rate of 1 mL/min. The temperature was kept at 25ºC, and detection at 223 nm was performed using a PDA detector. The estimated percentage of the drug was close to 100%, corresponding to the label claim of the tablet made in the laboratory. The results and statistical study demonstrated the utility of the current methods in the routine evaluation of umifenovir bulk and formulation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>умифеновир</kwd><kwd>УФ-спектроскопия</kwd><kwd>высокоэффективная жидкостная хроматография с обращенной фазой</kwd><kwd>анализ и валидация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>umifenovir</kwd><kwd>UV spectroscopy</kwd><kwd>reverse phase high performance liquid chromatography</kwd><kwd>assay and validation</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors are grateful to Mylan Labs Ltd. (India) for providing the gift samples of umifenovir and to colleague Pranita Kanojiya for helping in the preparation of tablets in the laboratory.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">National Center for Biotechnology Information. 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