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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">pharmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Разработка и регистрация лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Drug development &amp; registration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2305-2066</issn><issn pub-type="epub">2658-5049</issn><publisher><publisher-name>LLC «CPHA»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33380/2305-2066-2021-10-4-28-35</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-923</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>ПОИСК И РАЗРАБОТКА НОВЫХ ЛЕКАРСТВЕННЫХ СРЕДСТВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH AND DEVELOPMENT OF NEW DRUG PRODUCTS</subject></subj-group></article-categories><title-group><article-title>Изучение физико-химических свойств субстанции этравирина</article-title><trans-title-group xml:lang="en"><trans-title>Study of the physicochemical properties of the etravirine substance</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1852-7615</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Золотов</surname><given-names>С. А</given-names></name><name name-style="western" xml:lang="en"><surname>Zolotov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Анатольевич Золотов</p><p>109316, Москва, Волгоградский проспект, д. 42, корп. 24</p></bio><bio xml:lang="en"><p>Sergey A. Zolotov</p><p>42/24, Volgogradskiy avenue, Moscow, 109316</p></bio><email xlink:type="simple">duim50@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2538-5544</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономарев</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomarev</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пономарев Евгений Сергеевич</p><p>109316, Москва, Волгоградский проспект, д. 42, корп. 24</p></bio><bio xml:lang="en"><p>Evgenii S. Ponomarev</p><p>42/24, Volgogradskiy avenue, Moscow, 109316</p></bio><email xlink:type="simple">eugene.s.ponomarev@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8101-0758</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Даин</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dain</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игорь Александрович Даин</p><p>109316, Москва, Волгоградский проспект, д. 42, корп. 24</p></bio><bio xml:lang="en"><p>Igor A. Dain</p><p>42/24, Volgogradskiy avenue, Moscow, 109316</p></bio><email xlink:type="simple">angrenost@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4307-8791</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демина</surname><given-names>Н. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Demina</surname><given-names>N. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Борисовна Демина</p><p>119991, Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>Natalia B. Demina</p><p>8/2, Trubetskaya str., Mosoow, 119991</p></bio><email xlink:type="simple">nbd217@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2854-1653</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Золотова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zolotova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Сергеевна Золотова</p><p>109316, Москва, Волгоградский проспект, д. 42, корп. 24</p></bio><bio xml:lang="en"><p>Anna S. Zolotova</p><p>42/24, Volgogradskiy avenue, Moscow, 109316</p></bio><email xlink:type="simple">max_in_a@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АМЕДАРТ, ООО</institution></aff><aff xml:lang="en"><institution>AMEDART, LLC</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО Первый МГМУ им. И. М. Сеченова Минздрава России (Сеченовский Университет)</institution></aff><aff xml:lang="en"><institution>I.M. Sechenov First MSMU of the Ministry of Health of the Russian Federation (Sechenov University)</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>23</day><month>11</month><year>2021</year></pub-date><volume>10</volume><issue>4</issue><fpage>28</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Золотов С.А., Пономарев Е.С., Даин И.А., Демина Н.Б., Золотова А.С., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Золотов С.А., Пономарев Е.С., Даин И.А., Демина Н.Б., Золотова А.С.</copyright-holder><copyright-holder xml:lang="en">Zolotov S.A., Ponomarev E.S., Dain I.A., Demina N.B., Zolotova A.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://www.pharmjournal.ru/jour/article/view/923">https://www.pharmjournal.ru/jour/article/view/923</self-uri><abstract><sec><title>Введение</title><p>Введение. «Этравирин» является одним из востребованных антиретровирусных препаратов, однако его физико-химические свойства недостаточно описаны в научных публикациях. Подробная информация о свойствах субстанции необходима как для организации синтеза, так и для обоснования лекарственной формы и технологии ее получения, а также для выявления узких мест и критических параметров, влияющих на качество готового продукта.</p></sec><sec><title>Цель</title><p>Цель. Изучение физико-химических свойств этравирина для моделирования дизайна исследований по созданию инновационной лекарственной формы.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Этравирин (MSN Life Sciences Pvt. Ltd., Hetero Labs Ltd.). Температуру плавления определяли капиллярным методом. Образцы этравирина изучали с помощью дифференциальной сканирующей калориметрии (ДСК), рентгеновской порошковой дифрактометрии, ИК- и ЯМР-спектроскопии. Размер частиц определяли с помощью лазерной дифракция света. Форму и размер кристаллов определяли с применением просвечивающей электронной микроскопии (ПЭМ). Концентрацию этравирина в водных средах определяли c использованием метода ВЭЖХ при помощи флуориметрического детектора. Концентрацию этравирина в органических растворителях определяли спектрофотометрически.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. При помощи рентгеновской порошковой дифрактометрии и спектрометрии в ИК-области установлено, что исследованные субстанции представляют собой одну и ту же полиморфную модификацию. Температура плавления этравирина находится в диапазоне от 259 до 263 °С. Плавление сопровождается разложением. Субстанция практически нерастворима в водных средах при значениях рН в диапазоне от 1,2 до 6,8, растворима в некоторых органических растворителях, легко растворима в диметилсульфоксиде, тетрагидрофуране, N,N-диметилформамиде и N,N-диметилацетамиде. Коэффициент распределения в системе растворителей «октанол-1/ фосфатный буферный раствор рН 6,8» составил 5,22. Экспериментально показано, что субстанция этравирина - липофильная. Было установлено, что этравирин является высококристаллическим веществом и представляет собой кристаллы, имеющие форму вытянутых игольчатых призм.</p></sec><sec><title>Заключение</title><p>Заключение. Этравирин - липофильная, практически нерастворимая в водных растворах, растворимая в ряде органических растворителей субстанция. Изученные субстанции оказались одной полиморфной модификацией. Так как плавление субстанции сопровождается разложением, следует избегать процессов технологической обработки при высоких температурах.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Etravirine, being one of the most popular antiretroviral drugs, doesn't have its physicochemical properties sufficiently described in scientific publications. Detailed information on the substance properties is necessary both for organizing the synthesis and for justifying the dosage form and technology for its production, as well as for identifying bottlenecks and critical parameters that affect the quality of the finished product.</p></sec><sec><title>Aim</title><p>Aim. Study the etravirine physicochemical properties to model the design of studies to create an innovative dosage form</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Etravirine (MSN Life Sciences Pvt. Ltd., Hetero Labs Ltd.). The melting point was determined by the capillary method. Etravirine samples were studied via differential scanning calorimetry (DSC), X-ray powder diffractometry, IR and NMR spectroscopy. Particle size was determined using laser diffraction analysis. The shape and size of the crystals were determined with the help of transmission electron microscopy (TEM). The concentration of etravirine in aqueous media was determined using the HPLC method with a fluorescence detector. The concentration of etravirine in organic solvents was determined spectrophotometrically.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. The X-ray powder diffractometry and IR spectroscopy helped to determine the fact that the studied substances represent the same polymorphic modification. The melting point of etravirine ranges from 259 to 263 °C. Melting is accompanied by decomposition. The substance is practically insoluble in aqueous media at pH values in the range from 1.2 to 6.8, soluble in some organic solvents, readily soluble in dimethyl sulfoxide, tetrahydrofuran, dimethylformamide, dimethylacetamide. The distribution coefficient in the "1-octanol/phosphate buffer solution pH 6.8" solvent system was 5.22. The experiment showed that the etravirine substance is lipophilic. Etravirine is found to be a highly crystalline substance and represents needle-shape prismatic crystals.</p></sec><sec><title>Conclusion</title><p>Conclusion. Etravirine is a lipophilic substance, practically insoluble in aqueous solutions, soluble in a number of organic solvents. The studied substances turned out to be the same polymorphic modification. Since the melting of the substance is accompanied by decomposition, high temperatures processes should be avoided.</p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare that they have no obvious and potential conflicts of interest related to the publication of this article.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>этравирин</kwd><kwd>растворимость</kwd><kwd>температура плавления</kwd><kwd>просвечивающая электронная микроскопия</kwd><kwd>лазерная дифракции света</kwd><kwd>рентгеновская порошковая дифрактометрия</kwd><kwd>ИК-спектроскопия</kwd><kwd>ЯМР-спектроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>etravirine</kwd><kwd>solubility</kwd><kwd>melting point</kwd><kwd>transmission electron microscopy</kwd><kwd>laser diffraction analysis</kwd><kwd>X-ray powder diffractometry</kwd><kwd>IR spectroscopy</kwd><kwd>NMR spectroscopy</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">Committee for Medicinal Products for Human Use (CHMP) Assessment report for Intellence. 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