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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-1935</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>Определение топироксостата методами параллельной и многомодовой УФ-видимой спектрофотометрии</article-title><trans-title-group xml:lang="en"><trans-title>Parallel and Multimode UV-Visible Spectrophotometry Investigations for Topiroxostat</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>Barkule</surname><given-names>P.</given-names></name><name name-style="western" xml:lang="en"><surname>Barkule</surname><given-names>P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ширпур</p></bio><bio xml:lang="en"><p>Pooja Barkule - Department of Pharmaceutical Chemistry and Analysis.</p><p>Shirpur</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>Patil</surname><given-names>A. S.</given-names></name><name name-style="western" xml:lang="en"><surname>Patil</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ширпур</p></bio><bio xml:lang="en"><p>Amod S. Patil - Department of Pharmaceutical Chemistry.</p><p>Shirpur</p></bio><email xlink:type="simple">patilamod.s@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Shirkhedkar</surname><given-names>A. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Shirkhedkar</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ширпур</p></bio><bio xml:lang="en"><p>Atul A. Shirkhedkar - Department of Pharmaceutical Chemistry and Analysis.</p><p>Shirpur</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>Ganorkar</surname><given-names>S. B.</given-names></name><name name-style="western" xml:lang="en"><surname>Ganorkar</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ширпур</p></bio><bio xml:lang="en"><p>Saurabh B. Ganorkar - Department of Pharmaceutical Chemistry and Analysis.</p><p>Shirpur</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>Chaudhari</surname><given-names>S. R.</given-names></name><name name-style="western" xml:lang="en"><surname>Chaudhari</surname><given-names>S. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ширпур</p></bio><bio xml:lang="en"><p>Suraj R. Chaudhari - Department of Pharmaceutical Chemistry.</p><p>Shirpur</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт фармацевтического образования и исследований им. Пателя</institution></aff><aff xml:lang="en"><institution>R.C. Patel Institute of Pharmaceutical Education and Research</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт фармацевтики им. Пателя</institution></aff><aff xml:lang="en"><institution>R. C. Patel Institute of Pharmacy</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>09</month><year>2025</year></pub-date><volume>92</volume><issue>4</issue><fpage>557</fpage><lpage>557</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Barkule P., Patil A.S., Shirkhedkar A.A., Ganorkar S.B., Chaudhari S.R., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Barkule P., Patil A.S., Shirkhedkar A.A., Ganorkar S.B., Chaudhari S.R.</copyright-holder><copyright-holder xml:lang="en">Barkule P., Patil A.S., Shirkhedkar A.A., Ganorkar S.B., Chaudhari S.R.</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/1935">https://zhps.ejournal.by/jour/article/view/1935</self-uri><abstract><p>Топироксостат (TPX) — ингибитор ксантиноксидоредуктазы, используемый при лечении подагры. Для определения TPX в нерасфасованном виде и таблетках разработаны четыре метода параллельной УФ-видимой спектрофотометрии. Методы основаны на спектральном преобразовании производных нулевого и первого порядков, а также на оценке поглощения, амплитуды и площади под кривой УФ-спектра. Для TPX все четыре метода продемонстрировали линейность в диапазоне концентраций 2–12 мкг/мл с коэффициентом корреляции r2 &gt; 0.99. Рассчитанное разработанными методами процентное содержание препарата хорошо согласуется с указанным на этикетке для таблеток Topimac®. Каждый метод проверен в соответствии с рекомендациями Международного совета по гармонизации (ICH) Q2(R2). Разработанные методы линейные, точные и достаточно чувствительные. Для статистического сравнения результатов использован пакет одностороннего ANOVA. Показано, что F-значение меньше P-значения, отсутствует идентифицируемая изменчивость в результатах. Это указывает на перспективность предлагаемых параллельных и многомодовых подходов для оценки TPX.</p></abstract><trans-abstract xml:lang="en"><p>Topiroxostat (TPX) is a xanthine oxidoreductase inhibitor used in the treatment of gout. For the determination of TPX in bulk and tablets, four simple, specific, precise, sensitive, rapid, and eco-friendly, parallel UV-Visible spectrophotometry methods were developed. Although UV-Visible spectrophotometry estimation work is based on zero-order and first-order derivative spectral transformation, these methods also relied on absorbance, amplitude, and area under the curve of the UV-spectrum. TPX exhibited linearity in the concentration range of 2–12 μg/mL in all four methods, with a correlation coefficient of r2 &gt; 0.99. The estimated percentage of drug in the developed methods was found to be in good agreement with what the label claim for the Topimac® tablet formulation. Each method was validated in accordance with the International Council for Harmonisation (ICH) Q2(R2) guidelines. All of these developed methods were linear, accurate, precise, and adequately sensitive, and they were evaluated using one-way ANOVA to assess the statistical comparison of the results. The analyses indicated that the F-value was found to be less than the critical P-value, and there was no identifiable variability in the outcomes. This implied that, for all four methods, there were no significant statistical differences between the results, indicating that they are the best parallel and multimode approaches for the estimation of TPX.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>топироксостат</kwd><kwd>УФ-видимая спектрофотометрия</kwd><kwd>метод площади под кривой</kwd><kwd>производная спектрофотометрия</kwd><kwd>валидация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Topiroxostat</kwd><kwd>UV-Visible spectrophotometry</kwd><kwd>area under curve technique</kwd><kwd>derivative spectrophotometry</kwd><kwd>validation</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors are grateful to the principal of R.C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India, for providing the laboratory facility.</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">A. G. Dhandar, S. B. Ganorkar, A. S. Patil, A. A. Shirkhedkar, J. Pharm. Tech., Res. and Manag., 6, No. 1, 9–20 (2018).</mixed-citation><mixed-citation xml:lang="en">A. G. Dhandar, S. B. Ganorkar, A. S. Patil, A. A. Shirkhedkar, J. Pharm. Tech., Res. and Manag., 6, No. 1, 9–20 (2018).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">A. S. Patil, A. A. Shirkhedkar, Pharm. Methods, 7, No. 2, 127–131 (2016).</mixed-citation><mixed-citation xml:lang="en">A. S. Patil, A. A. Shirkhedkar, Pharm. 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