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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-1829</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>УФ-спектрофотометрический метод производной первого порядка для определения метронидазола в присутствии повидон-йода в дерматологическом препарате</article-title><trans-title-group xml:lang="en"><trans-title>Validated Stability-Indicating Method Development Designed for the Determination of Metronidazole in the Presence of Povidone-Iodine in Dermatological Formulation by a First-Order Derivative UV Spectrophotometric Method</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>Fulzele</surname><given-names>P.</given-names></name><name name-style="western" xml:lang="en"><surname>Fulzele</surname><given-names>Pratiksha</given-names></name></name-alternatives><bio xml:lang="ru"><p>Райпур, Чхаттисгарх</p></bio><bio xml:lang="en"><p>Raipur, Chhattisgarh</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>Pandey</surname><given-names>S.</given-names></name><name name-style="western" xml:lang="en"><surname>Pandey</surname><given-names>Swati</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бхопал, Мадхья-Прадеш</p></bio><bio xml:lang="en"><p>Bhopal, Madhya Pradesh</p></bio><email xlink:type="simple">dubeyswati326@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>Pandey</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Pandey</surname><given-names>Ravindra</given-names></name></name-alternatives><bio xml:lang="ru"><p>Райпур, Чхаттисгарх</p></bio><bio xml:lang="en"><p>Raipur, Chhattisgarh</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>Shukla</surname><given-names>S. S.</given-names></name><name name-style="western" xml:lang="en"><surname>Shukla</surname><given-names>Shiv Shankar</given-names></name></name-alternatives><bio xml:lang="ru"><p>Райпур, Чхаттисгарх</p></bio><bio xml:lang="en"><p>Raipur, Chhattisgarh</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Колумбийский институт фармацевтики</institution></aff><aff xml:lang="en"><institution>Columbia Institute of Pharmacy</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт исследований и технологий фармацевтики имени Сагара, Университет SAGE</institution></aff><aff xml:lang="en"><institution>Sagar Institute of Research &amp; Technology-Pharmacy, SAGE University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2025</year></pub-date><volume>92</volume><issue>2</issue><fpage>272</fpage><lpage>272</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Fulzele P., Pandey S., Pandey R., Shukla S.S., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Fulzele P., Pandey S., Pandey R., Shukla S.S.</copyright-holder><copyright-holder xml:lang="en">Fulzele P., Pandey S., Pandey R., Shukla S.S.</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/1829">https://zhps.ejournal.by/jour/article/view/1829</self-uri><abstract><p>Для определения стабильности метронидазола в присутствии повидон-йода в дерматологических препаратах разработан УФ-спектрофотометрический метод производной первого порядка, который обеспечивает улучшенное разрешение перекрывающихся спектров. Получено λ max = 319 нм для метронидазола и λ max = 235 нм для повидон-йода, длины волн обнаружения первого порядка — 298 и 221 нм для метронидазола и повидон-йода. Закон Бера соблюдался в диапазоне концентраций 5–45 мкг/мл с R2 = 0.999 и 0.9967 для метронидазола и повидон-йода при использовании дистиллированной воды в качестве экономичного растворителя. Разработанный метод проверен на точность, прецизионность, надежность, найдены предел количественного определения и предел обнаружения. Установлены минимальные диапазоны внутридневных колебаний и колебаний в течение нескольких дней, составляющие &lt;2% относительного стандартного отклонения. Процент восстановления с использованием метода отвечает характеристикам, указанным на этикетке, и находится в диапазоне 100.22–101%, что соответствует руководящим принципам Международной конференции по гармонизации для принудительной деградации. Представленный метод производных первого порядка прост, экономичен, безопасен, точен и пригоден для прогнозирования стабильности лекарственных средств в коммерческих препаратах</p></abstract><trans-abstract xml:lang="en"><p>Metronidazole, a nitroimidazole antimicrobial, is used in combination with povidone iodine in the form of a topical ointment for treating and preventing skin infections in several skin conditions such as otitis externa, sycosis barbae, tinea infestations, cutaneous candidosis, burns, boils, or ulcers. The study presented is aimed at developing a stability-indicating method for the determination of metronidazole in the presence of povidone-iodine in dermatological formulations by a first-order derivative UV spectrophotometric method that provides an enhanced resolution of overlapping spectra. The λmax was found at 319 nm for metronidazole and at 235 nm for povidone-iodine. First-order detection wavelength has been taken at 298 and 221 nm for metronidazole and povidone-iodine, respectively. Beer’s law was obeyed in a concentration range of 5–45 µg/mL with R2 values of metronidazole and povidone of 0.999 and 0.9967, respectively, using distilled water as an economical solvent. The developed method was validated on various parameters such as accuracy, precision, robustness, limit of quantification and limit of detection. It can be perceived from the results that a minimum intraday and interday variation limiting below 2% of relative standard deviation was established. The percentage recovery using the stated method was worthy of characteristics with its label claim and found within the range 100.22–101%, within the acceptable limits of International Conference on Harmonization guidelines for the forced degradation and establishes a validated method for metronidazole and povidone-iodine and its main degradants in the active pharmaceutical ingredients (API) and the marketed formulations. The exclusivity of the presented first-order derivative UV spectroscopic method lies in it being simple, economical, safe, precise, accurate, and reproducible for future studies of the prediction of stability of the drugs in the marketed formulation. The technique is established to be unambiguous for the determination of a drug and its degradants.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод индикации стабильности</kwd><kwd>производная первого порядка</kwd><kwd>повидон-йод</kwd><kwd>метронидазол</kwd><kwd>спектрофотометр</kwd></kwd-group><kwd-group xml:lang="en"><kwd>stability-indicating method</kwd><kwd>first-order derivative</kwd><kwd>povidone-iodine</kwd><kwd>metronidazole</kwd><kwd>spectrophotometer</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors would also like to acknowledge the invaluable assistance provided by the Columbia Institute of Pharmacy Raipur, whose contributions made this research possible.</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">S. Pandey, R. Pandey, S. S. Shukla, Indian J. Pharm. Ed. 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