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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-1872</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>Методы спектрального разрешения и анализа спектральной чистоты для количественного определения парацетамола и флупиртина малеата в таблетированной форме</article-title><trans-title-group xml:lang="en"><trans-title>Approach of Spectral Resolution and Analyzing Spectral Purity for Quantification of Paracetamol and Flupirtine Maleate in Tablet Formulation</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>Bhandari</surname><given-names>А. M.</given-names></name><name name-style="western" xml:lang="en"><surname>Bhandari</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гоа</p></bio><bio xml:lang="en"><p>Aditi M. Bhandari</p><p>Goa</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>Fernandes</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fernandes</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гоа</p></bio><bio xml:lang="en"><p>Adison Fernandes</p><p>Goa</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>Kathiravan</surname><given-names>М. K.</given-names></name><name name-style="western" xml:lang="en"><surname>Kathiravan</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагар, Каттанкулатур, Ченнаи, Тамил Наду</p></bio><bio xml:lang="en"><p>Nagar, Kattankulathur, Chennai, Tamil Nadu</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Gandhi</surname><given-names>S.</given-names></name><name name-style="western" xml:lang="en"><surname>Gandhi</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Махараштра</p></bio><bio xml:lang="en"><p>Santosh Gandhi</p><p>Maharashtra</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rane</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Rane</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пуна, Махараштра</p></bio><bio xml:lang="en"><p>Pune, Maharashtra</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Mahajan</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mahajan</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гоа</p></bio><bio xml:lang="en"><p>Anand Mahajan</p><p>Goa</p></bio><email xlink:type="simple">anand_mahajan@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Фармацевтический колледж Гоа</institution><country>Индия</country></aff><aff xml:lang="en"><institution>Goa College of Pharmacy, Department of Pharmaceutical Analysis</institution><country>India</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Фармацевтический колледж SRM</institution><country>Индия</country></aff><aff xml:lang="en"><institution>SRM Colleges of Pharmacy, Department of Pharmaceutical Chemistry</institution><country>India</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Фармацевтический колледж AISSMS</institution><country>Индия</country></aff><aff xml:lang="en"><institution>AISSMS College of Pharmacy, Department of Pharmaceutical Analysis</institution><country>India</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Фармацевтический колледж BVDU Poona</institution><country>Индия</country></aff><aff xml:lang="en"><institution>BVDU Poona College of Pharmacy, Department of Pharmaceutical Chemistry</institution><country>India</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>05</month><year>2025</year></pub-date><volume>92</volume><issue>3</issue><fpage>412</fpage><lpage>412</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Bhandari А.M., Fernandes А., Kathiravan М.K., Gandhi S., Rane R., Mahajan А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Bhandari А.M., Fernandes А., Kathiravan М.K., Gandhi S., Rane R., Mahajan А.</copyright-holder><copyright-holder xml:lang="en">Bhandari A.M., Fernandes A., Kathiravan M.K., Gandhi S., Rane R., Mahajan A.</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/1872">https://zhps.ejournal.by/jour/article/view/1872</self-uri><abstract><p>Показаны возможности спектрофотометрических подходов, сопоставимых с хроматографическими методами с точки зрения разрешения, определения спектральной чистоты и количественной оценки бинарной смеси, присутствующей в составе таблеток. Перекрывающиеся спектры препаратов парацетамола (PCM) и флупиртина малеата (FLU), присутствующих в виде бинарной смеси, разрешены с использованием методов вычитания отношений RS-ERS, RS-UCS и RS-CM. После спектрального разрешения каждый препарат определен количественно путем измерения поглощения на длине волны максимума поглощения препарата с использованием уравнения линейной регрессии. Рассматриваемые спектрофотометрические подходы применены для анализа физических смесей, приготовленных в лаборатории, а также коммерческих составов таблеток. Спектральная чистота разрешенных спектров изучена путем вычисления угла спектрального контраста и фактора спектрального отношения. Разработанные методы проверены в соответствии с руководящими принципами Международного совета по гармонизации (ICH) Q2 (R1). Методам присвоены баллы экологичности с использованием инструмента AGREE, они успешно применены для анализа составов коммерческих таблеток.</p></abstract><trans-abstract xml:lang="en"><p>The present research work was conducted to show the capabilities of the spectrophotometric approaches comparable to chromatographic techniques in terms of resolution, determination of spectral purity, and quantification of binary mixture present in tablet formulation. Overlapping spectra of the drugs paracetamol (PCM) and flupirtine maleate (FLU) present as a binary mixture were resolved using ratio subtraction plus the extended ratio subtraction method (RS-ERS), ratio subtraction method plus the unified constant subtraction method (RS-UCS) and ratio subtraction method plus the constant multiplication method (RS-CM). After spectral resolution, each drug was quantified by measuring the absorbance at the respective wavelength maximum of the drug using a linear regression equation. The aforementioned three spectrophotometric approaches were initially applied to physical mixtures prepared in the laboratory; later it was extended to analyze marketed tablet formulation. The spectral purity of resolved spectra was studied by computing the spectral contrast angle (SCA) and the spectral ratio factor (SRF). Developed methods were validated as per the parameters mentioned under the International Council for Harmonization (ICH) guideline Q2 (R1). Developed methods were assigned greenness scores using the AGREE tool and successfully used for analyzing marketed tablet formulation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спектрофотометрический подход</kwd><kwd>спектральный коэффициент отношения</kwd><kwd>спектральный угол контраста</kwd><kwd>парацетамол</kwd><kwd>флупиртина малеат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ratio subtraction plus the extended ratio subtraction method</kwd><kwd>ratio subtraction method plus the unified constant subtraction method</kwd><kwd>ratio subtraction method complementing with constant multiplication method</kwd><kwd>spectral ratio factor</kwd><kwd>spectral contrast angle</kwd><kwd>paracetamol</kwd><kwd>flupirtine meleate</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">B. J. Anderson, Paediatr. 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