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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">vedomostiregmed</journal-id><journal-title-group><journal-title xml:lang="ru">Регуляторные исследования и экспертиза лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Regulatory Research and Medicine Evaluation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">3034-3062</issn><issn pub-type="epub">3034-3453</issn><publisher><publisher-name>Federal State Budgetary Institution ‘Scientific Centre for Expert Evaluation of Medicinal Products’ of the Ministry of Health of the Russian Federation (FSBI ‘SCEEMP’)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30895/1991-2919-2025-15-6-655-663</article-id><article-id custom-type="elpub" pub-id-type="custom">vedomostiregmed-771</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>КОНТРОЛЬ КАЧЕСТВА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>QUALITY CONTROL</subject></subj-group></article-categories><title-group><article-title>Получение и аттестация первичного стандартного образца 6,8-диметил-2-пиперидинометил-2,3-дигидротиазоло[2,3-F]ксантина</article-title><trans-title-group xml:lang="en"><trans-title>Obtaining and Certifying Primary Reference Standard of 6,8-Dimethyl-2-Piperidinomethyl-2,3-Dihydrothiazolo[2,3-F]xanthine</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-9625-0498</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петраков</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrakov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петраков Александр Игоревич</p><p>Московский тракт, д. 2, г. Томск, 634050</p></bio><bio xml:lang="en"><p>Alexandr I. Petrakov</p><p>2 Moskovsky Hwy, Tomsk 634050</p></bio><email xlink:type="simple">aipp19@yandex.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/0000-0001-5505-7141</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кривощеков</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krivoshchekov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кривощеков Сергей Владимирович, канд. хим. наук, доцент</p><p>Московский тракт, д. 2, г. Томск, 634050</p></bio><bio xml:lang="en"><p>Sergei V. Krivoshchekov, Cand. Sci. (Chem.), Associate Professor</p><p>2 Moskovsky Hwy, Tomsk 634050</p></bio><email xlink:type="simple">ksv_tsu@mail.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/0000-0002-1120-4979</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гурьев</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Guryev</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гурьев Артем Михайлович, д-р фарм. наук</p><p>Московский тракт, д. 2, г. Томск, 634050</p></bio><bio xml:lang="en"><p>Artem M. Guriev, Dr. Sci. (Pharm.)</p><p>2 Moskovsky Hwy, Tomsk 634050</p></bio><email xlink:type="simple">titan_m@mail.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/0000-0002-2153-7945</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белоусов</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belousov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белоусов Михаил Валерьевич, д-р фарм. наук, профессор</p><p>Московский тракт, д. 2, г. Томск, 634050</p></bio><bio xml:lang="en"><p>Mikhail V. Belousov, Dr. Sci. (Pharm.), Professor</p><p>2 Moskovsky Hwy, Tomsk 634050</p></bio><email xlink:type="simple">mvb63@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение&#13;
высшего образования «Сибирский государственный медицинский&#13;
университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>19</day><month>12</month><year>2025</year></pub-date><volume>15</volume><issue>6</issue><fpage>655</fpage><lpage>663</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петраков А.И., Кривощеков С.В., Гурьев А.М., Белоусов М.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Петраков А.И., Кривощеков С.В., Гурьев А.М., Белоусов М.В.</copyright-holder><copyright-holder xml:lang="en">Petrakov A.I., Krivoshchekov S.V., Guryev A.M., Belousov M.V.</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.vedomostincesmp.ru/jour/article/view/771">https://www.vedomostincesmp.ru/jour/article/view/771</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ. Эффективное функционирование системы контроля качества лекарственных препаратов невозможно без использования стандартных образцов в процессе валидации и верификации аналитических методик. Особую актуальность приобретает разработка стандартных образцов для контроля качества фармацевтических субстанций, впоследствии использующихся в целях фармацевтической разработки новых лекарственных препаратов.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Разработка способа получения и проведение аттестации первичного стандартного образца 6,8-диметил-2-пиперидинометил-2,3-дигидротиазоло[2,3-F]ксантина для его последующего применения в контроле качества лекарственных средств.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. Стандартный образец получали перекристаллизацией</p><p>6,8-диметил-2-пиперидинометил-2,3-дигидротиазоло[2,3-F]ксантина из этанола. Структуру стандартного образца устанавливали методами ядерного магнитного резонанса (ЯМР) и инфракрасной (ИК) спектроскопии, чистоту определяли методом баланса масс, методом высокоэффективной жидкостной хроматографии (родственные примеси), а также методом неводной ацидиметрии.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Выполнена оценка физико-химических характеристик стандартного образца 6,8-диметил-2-пиперидинометил-2,3-дигидротиазоло[2,3-F]ксантина, в том числе подтверждение структуры методами ИК- и ЯМР-спектроскопии, определение потери в массе при высушивании 0,073±0,015%, сульфатной золы 0,080±0,009%, родственных примесей (не обнаружено), тяжелых металлов (не более 0,002%) и элементного состава (С — 53,68±0,17%; Н — 6,32±0,02%; N — 20,81±0,09%; O — 9,52±0,06%; S — 9,57±0,04%), количественное определение методом неводной ацидиметрии 99,74±0,12% и методом баланса масс 99,85±0,01%.</p></sec><sec><title>ВЫВОДЫ</title><p>ВЫВОДЫ. Предложен способ получения стандартного образца 6,8-диметил- 2-пиперидинометил-2,3-дигидротиазоло[2,3-F]ксантина. Физико-химические характеристики полученного образца соответствуют требованиям, предъявляемым к стандартному образцу, что позволяет рекомендовать данный образец для использования в качестве эталонного материала при проведении контроля качества лекарственных средств 6,8-диметил-2-пиперидинометил2,3-дигидротиазоло[2,3-F]ксантина.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION. An effective quality control system for medicinal products is impossible without reference standards used for validation and verification of analytical procedures. It is especially relevant to develop reference standards for quality control of new active pharmaceutical ingredients used to develop medicinal products.</p></sec><sec><title>AIM</title><p>AIM. This study aimed to develop a method for obtaining and certifying a primary reference standard of 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F] xanthine to be used in quality control of medicinal products.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. A reference standard was obtained by recrystallising 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine from ethanol. The structure of the reference standard was defined by nuclear magnetic resonance and infrared spectroscopy; purity was measured by mass balance, high-performance liquid chromatography (related impurities), and titration (non-aqueous acidimetry).</p></sec><sec><title>RESULTS</title><p>RESULTS. The study assessed physical and chemical properties of a reference standard for 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine. This included structure elucidation by infrared and nuclear magnetic resonance spectroscopy; loss on drying 0.073±0.015%; sulfate ash 0.080±0.009%; related substances (not found); heavy metal impurities (not more than 0.002%); elemental composition (C — 53.68±0.17%; H — 6.32±0.02%; N — 20.81±0.09%; O — 9.52±0.06%; S — 9.57±0.04%); quantitative determination by non-aqueous titration 99.74±0.12%, and mass balance 99.85±0.01%.</p></sec><sec><title>INTRODUCTION</title><p>INTRODUCTION. An effective quality control system for medicinal products is impossible without reference standards used for validation and verification of analytical procedures. It is especially relevant to develop reference standards for quality control of new active pharmaceutical ingredients used to develop medicinal products.</p></sec><sec><title>AIM</title><p>AIM. This study aimed to develop a method for obtaining and certifying a primary reference standard of 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F] xanthine to be used in quality control of medicinal products.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. A reference standard was obtained by recrystallising 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine from ethanol. The structure of the reference standard was defined by nuclear magnetic resonance and infrared spectroscopy; purity was measured by mass balance, high-performance liquid chromatography (related impurities), and titration (non-aqueous acidimetry).</p></sec><sec><title>RESULTS</title><p>RESULTS. The study assessed physical and chemical properties of a reference standard for 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine. This included structure elucidation by infrared and nuclear magnetic resonance spectroscopy; loss on drying 0.073±0.015%; sulfate ash 0.080±0.009%; related substances (not found); heavy metal impurities (not more than 0.002%); elemental composition (C — 53.68±0.17%; H — 6.32±0.02%; N — 20.81±0.09%; O — 9.52±0.06%; S — 9.57±0.04%); quantitative determination by non-aqueous titration 99.74±0.12%, and mass balance 99.85±0.01%.</p></sec><sec><title>INTRODUCTION</title><p>INTRODUCTION. An effective quality control system for medicinal products is impossible without reference standards used for validation and verification of analytical procedures. It is especially relevant to develop reference standards for quality control of new active pharmaceutical ingredients used to develop medicinal products.</p></sec><sec><title>AIM</title><p>AIM. This study aimed to develop a method for obtaining and certifying a primary reference standard of 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F] xanthine to be used in quality control of medicinal products.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. A reference standard was obtained by recrystallising 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine from ethanol. The structure of the reference standard was defined by nuclear magnetic resonance and infrared spectroscopy; purity was measured by mass balance, high-performance liquid chromatography (related impurities), and titration (non-aqueous acidimetry).</p></sec><sec><title>RESULTS</title><p>RESULTS. The study assessed physical and chemical properties of a reference standard for 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine. This included structure elucidation by infrared and nuclear magnetic resonance spectroscopy; loss on drying 0.073±0.015%; sulfate ash 0.080±0.009%; related substances (not found); heavy metal impurities (not more than 0.002%); elemental composition (C — 53.68±0.17%; H — 6.32±0.02%; N — 20.81±0.09%; O — 9.52±0.06%; S — 9.57±0.04%); quantitative determination by non-aqueous titration 99.74±0.12%, and mass balance 99.85±0.01%.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION. We have developed production process of 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine reference standard. Physical and chemical properties of the above standard comply with the requirements and allow us to recommend 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine as a reference in the quality control of medicinal products.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>стандартный образец</kwd><kwd>ЯМР</kwd><kwd>ИК-спектроскопия</kwd><kwd>ВЭЖХ</kwd><kwd>6</kwd><kwd>8-диметил-2-пиперидинометил-2</kwd><kwd>3-дигидротиазоло[2</kwd><kwd>3-F]ксантин</kwd><kwd>аттестация</kwd><kwd>индуктор монооксигеназной системы гепатоцитов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reference standard</kwd><kwd>nuclear magnetic resonance</kwd><kwd>NMR</kwd><kwd>infrared spectroscopy</kwd><kwd>IR spectroscopy</kwd><kwd>high-performance liquid chromatography</kwd><kwd>HPLC</kwd><kwd>6</kwd><kwd>8-dimethyl-2-piperidinomethyl-2</kwd><kwd>3-dihydrothiazolo[2</kwd><kwd>3-F] xanthine</kwd><kwd>certification</kwd><kwd>inductor of monooxygenase hepatocyte system</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания 720000Ф.99.1.БН62АБ28000.</funding-statement><funding-statement xml:lang="en">The study was carried out within the framework of the state Assignment 720000F.99.1.BN62AB28000.</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">Devarbhavi H, Asrani SK, Arab JP, et al. 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