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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-1981</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 тандемных методов УФ-спектроскопии для одновременной оценки дапаглифлозина и вилдаглиптина в нерасфасованном виде и комбинированной лекарственной форме</article-title><trans-title-group xml:lang="en"><trans-title>Development and Validation of Tandem UV Spectroscopic Methods for Simultaneous Estimation of Dapagliflozin and Vildagliptin in Its Bulk and Combined Dosage Form</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>Kutty</surname><given-names>S. V.</given-names></name><name name-style="western" xml:lang="en"><surname>Kutty</surname><given-names>Sheeja Velayudhan</given-names></name></name-alternatives><bio xml:lang="ru"><p>Палаккад, Керала</p></bio><bio xml:lang="en"><p>Palakkad, Kerala</p></bio><email xlink:type="simple">sheejasureshsree@yahoo.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>Sahalamol</surname><given-names>S.</given-names></name><name name-style="western" xml:lang="en"><surname>Sahalamol</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Палаккад, Керала</p></bio><bio xml:lang="en"><p>Palakkad, Kerala</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>Thwalhath</surname><given-names>K.</given-names></name><name name-style="western" xml:lang="en"><surname>Thwalhath</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Палаккад, Керала</p></bio><bio xml:lang="en"><p>Palakkad, Kerala</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>Ummer</surname><given-names>Z.</given-names></name><name name-style="western" xml:lang="en"><surname>Ummer</surname><given-names>Zuhdha</given-names></name></name-alternatives><bio xml:lang="ru"><p>Палаккад, Керала</p></bio><bio xml:lang="en"><p>Palakkad, Kerala</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Керальский университет медицинских наук, фармацевтический колледж Грейс</institution></aff><aff xml:lang="en"><institution>Kerala University of Health Sciences, Grace College of Pharmacy, Department of Pharmaceutical Analysis</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2025</year></pub-date><volume>92</volume><issue>5</issue><fpage>704</fpage><lpage>704</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kutty S., Sahalamol S., Thwalhath K., Ummer Z., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Kutty S., Sahalamol S., Thwalhath K., Ummer Z.</copyright-holder><copyright-holder xml:lang="en">Kutty S., Sahalamol S., Thwalhath K., Ummer Z.</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/1981">https://zhps.ejournal.by/jour/article/view/1981</self-uri><abstract><p>Дапаглифлозин и вилдаглиптин – противодиабетические препараты 2-го типа, в которых дапаглифлозин является высокоселективным ингибитором натрий-глюкозного котранспортера-2, а вилдаглиптин действует как ингибитор дипептидилпептидазы-4 (CD26). Предлагается специальный тандемный спектроскопический подход для оценки дапаглифлозина и вилдаглиптина в их индивидуальных и комбинированных фармацевтических формах. Метод А (коррекция поглощения), где максимум поглощения дапаглифлозина составлял 223 нм, также показал поглощение при 276 нм, в то время как максимум поглощения вилдаглиптина определяется площадью пика растворителя. Длина волны детектирования 223 нм с нулевым поглощением при 276 нм. Метод А продемонстрировал хорошую линейность в диапазоне концентрации от 4 до 36 мкг/мл для дапаглифлозина, а также от 40 до 360 мкг/мл для вилдаглиптина, высокую степень корреляции R2 = 0.9964 для дапаглифлозина и R2 = 0.9991 для вилдаглиптина. Метод B (метод двухточечной стандартизации): вилдаглиптин показывает максимумы поглощения на крае УФ-области, поэтому, чтобы избежать наложений с пиками растворителя, пик вилдаглиптина смещен в видимую область с помощью бромкрезолового зеленого. В качестве растворителя использовали этанол. Максимумы поглощения дапаглифлозина и вилдаглиптина обнаружены при 278 и 622 нм. Метод В демонстрирует хорошую линейность в диапазоне концентраций 20–52 мкг/мл для дапаглифлозина и 200–520 мкг/мл для вилдаглиптина, а также высокую степень корреляции R2 = 0.9989 для дапаглифлозина и R2 = 0.9996 для вилдаглиптина. Оба метода демонстрируют хорошую линейность, точность и воспроизводимость с низким процентом относительного стандартного отклонения, а также лучшую степень извлечения и воспроизводимость. Тест на чувствительность проведен путем расчета предела обнаружения (LOD) и предела количественного определения (LOQ).</p></abstract><trans-abstract xml:lang="en"><p>Dapagliflozin and Vildagliptin are type 2 antidiabetic drugs in which Dapagliflozin is a highly selective sodium-glucose cotransporter-2 inhibitor, and Vildagliptin functions as a dipeptidyl peptidase-4 (CD26) inhibitor. This research article proposes a specific tandem spectroscopy approach verified for the assessment of Dapagliflozin and Vildagliptin in their individual and combined pharmaceutical formulations. Method A (absorption correction), where the absorption maximum for Dapagliflozin was 223 nm, also showed absorbance at 276 nm, while the absorption maxima for vildagliptin occur at the same wavelength as the solvent peak, the detection wavelength was thus selected at 223 nm with a zero absorbance at 276 nm. The developed technique exhibited good linearity, ranging from 4–36 µg/mL for Dapagliflozin as well as 40–360 µg/mL for Vildagliptin, exhibiting a high degree of correlation (R2 = 0.9964) for Dapagliflozin and (R2 = 0.9991) for Vildagliptin. Method B (double point standardization method), Vildagliptin shows absorption maxima in the end UV region, thus, for avoiding interference with solvent peaks, the peak of Vildagliptin was shifted to the visible region by using bromocresol green. Ethanol was used as a solvent. The absorption maxima of Dapagliflozin and Vildagliptin were found to be 278 and 622 nm, respectively. The developed method showed good linearity, ranging from 20–52 µg/mL for Dapagliflozin as well as 200–520 µg/mL for Vildagliptin, and it exhibited a high degree of correlation (R2= 0.9989) for Dapagliflozin and (R2= 0.9996) Vildagliptin. Both methods exhibited good linearity, accuracy, and precision, with a low percent relative standard deviation, and they both demonstrated better recovery and reproducibility. A sensitivity test was performed by calculating the LOD and LOQ. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>дапаглифлозин</kwd><kwd>вилдаглиптин</kwd><kwd>УФ-спектроскопия</kwd><kwd>метод коррекции поглощения</kwd><kwd>метод двухточечной стандартизации</kwd><kwd>валидация метода</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dapagliflozin</kwd><kwd>vildagliptin</kwd><kwd>UV spectroscopy</kwd><kwd>absorption correction method</kwd><kwd>double point standardization method</kwd><kwd>method validation</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The author expresses gratitude to Grace College of Pharmacy and its administration for their assistance and essential contributions in compiling this study effort.</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">International Diabetes Federation (IDF), IDF Diabetes Atlas, 6th Edition, 22–25 (2019), https://diabetesatlas.orgresource-files›2010/07.</mixed-citation><mixed-citation xml:lang="en">International Diabetes Federation (IDF), IDF Diabetes Atlas, 6th Edition, 22–25 (2019), https://diabetesatlas.orgresource-files›2010/07.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Fahima Aktar, Md. 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