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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Biotherapy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Biotherapy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский биотерапевтический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9784</issn><issn publication-format="electronic">1726-9792</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">822</article-id><article-id pub-id-type="doi">10.17650/1726-9784-2016-15-3-55-61</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">DEVELOPMENT AND VALIDATION OF CYPHETRYLIN ASSAY IN TABLETS</article-title><trans-title-group xml:lang="ru"><trans-title>РАЗРАБОТКА И ВАЛИДАЦИЯ МЕТОДИКИ КОЛИЧЕСТВЕННОГО ОПРЕДЕЛЕНИЯ ЦИФЕТРИЛИНА В ТАБЛЕТКАХ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shprakh</surname><given-names>Z. S.</given-names></name><name xml:lang="ru"><surname>Шпрах</surname><given-names>З. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ignatieva</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Игнатьева</surname><given-names>Елена Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>chem_analysis@ronc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yartseva</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Ярцева</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dmitricheva</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Дмитричева</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Smirnova</surname><given-names>L. I.</given-names></name><name xml:lang="ru"><surname>Смирнова</surname><given-names>Л. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff id="aff1"><institution>ФГБУ «Российский онкологический научный центр им. Н.Н. Блохина» Минздрава России</institution></aff><pub-date date-type="pub" iso-8601-date="2016-09-30" publication-format="electronic"><day>30</day><month>09</month><year>2016</year></pub-date><volume>15</volume><issue>3</issue><fpage>55</fpage><lpage>61</lpage><history><date date-type="received" iso-8601-date="2018-04-10"><day>10</day><month>04</month><year>2018</year></date></history><permissions/><self-uri xlink:href="https://bioterapevt.abvpress.ru/jour/article/view/822">https://bioterapevt.abvpress.ru/jour/article/view/822</self-uri><abstract xml:lang="en"><p>Background. In N.N. Blokhin Russian Cancer Research Center have been synthesized a number of hypothalamic hormone somatostatin analogues, including pentapeptide cyphetrylin, and drug Cyphetrylin tablets 6 mg has been created. One of the drug standardization step is development of assay technique for acting substance in the final preparation. Objective. Development and validation of cyphetrylin assay in tablets. Materials and methods. The study used cyphetrylin, tablets 6 mg, сyphetrylin powder substance (FSBI “N.N. Blokhin Russian Cancer Research Center”, branch “Naukaprofi”), lactose monohydrate, cellulose microcrystalline, potato starch, povidone, talc, magnesium stearate (European Pharmacopoeia current edition), 95 % ethyl alcohol. Method of assay - spectrophotometry. Results. The technique for assay of сyphetrylin in drug “Cyphetrylin, tablets 6 mg” has been developed. Validation was performed to confirm test validity and accuracy. The technique was estimated by validation characteristics: specificity, linearity, accuracy, precision (repeatability and intermediate precision). Conclusion. The developed technique has the required characteristics: specificity, accuracy, repeatability, intermediate precision, linearity and can be used in the range of 70-130 % of nominal сyphetrylin content in preparation.</p></abstract><trans-abstract xml:lang="ru"><p/></trans-abstract><kwd-group xml:lang="ru"><kwd>цифетрилин</kwd><kwd>количественное определение</kwd><kwd>спектрофотометрия</kwd><kwd>валидация</kwd><kwd>cyphetrylin</kwd><kwd>assay</kwd><kwd>spectrophotometry</kwd><kwd>validation</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Pless J. The history of somatostatin analogs. J Endocrinol Invest 2005; 28: 1-4. PMID: 16625837.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Strosberg J.R., Kvols L.K. A review of the current clinical trials for gastroenteropancreatic neuroendocrine tumors. Expert Opin Investig Drugs 2007; 16(2): 219-24. DOI: 10.1517/ 13543784.16.2.219. 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