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Разработка и валидация методики определения посторонних примесей в субстанции биологически активного соединения кон-1

Разработка и валидация методики определения посторонних примесей в субстанции биологически активного соединения кон-1

Abstract

Синтезировано новое биологически активное соединение из группы производных 3-гидрокси-3-пирролин-2-она КОН-1, превосходящее по антиамнестическому действию пирацетам. Посторонние примеси (исходные продукты синтеза) метиловый эфир ацетилпировиноградной кислоты (МЭАПВК) и 4-бромбензальдегид (ББА) определяли обращённо-фазной ВЭЖХ. Анализ проводили на колонке С18 (25 см×4,6 мм, сорбент Discovery® С18 с размером частиц 5 мкм). Подвижная фаза: фосфатный буфер (рН 7) – ацетонитрил; режим элюирования – градиентный; длина волны детектирования – 310 нм (для МЭАПВК), 260 нм (для ББА). Линейность разработанной методики определяли на пяти уровнях концентраций МЭАПВК и ББА в пределах 0,05-1,0% от содержания основного вещества субстанции КОН-1. Пределы обнаружения и количественного определения МЭАПВК составили соответственно 0,8 мкг/мл и 1,5 мкг/мл; для ББА 0,3 мкг/мл и 0,5 мкг/мл. Оценку внутрилабораторной повторяемости методики проводили в пределах концентраций МЭАПВК и ББА 2-15 мкг/мл. Относительное стандартное отклонение не превышает 10,0%. Определение правильности методики проводили на трех уровнях содержания примесей в субстанции КОН-1 (0,1, 0,5 и 0,75%). Границы открываемости МЭАПВК и ББА не выходят за пределы 75–125%, рекомендованные при количественном определении примесей с нормой содержания от 0,1 до 1%.

New biologically active substance from group of derivatives of 3-hydroxy-3-pyrrolin-2-on KON-1 which exceeded on antiamnestic action of pyracetam are synthesized. The impurity (the initial product of synthesis) – methilic aether acetylpyrovic acid (MAAPVA) and 4-brombenzaldegid (BBA) was determine by reserve phase HPLC. The analysis performed on C18 column (25сm×4,6mm, sorbent Discovery® С18, 5 µm particle size). Mobile phase: phosphate buffer (pH7) – acetonitrile; elution mode – gradient; the wave length of detection – 310 nm (for MAAPVA), 260 nm (for BBA). Linearity of elaborated methodic determined on the five levels of concentration in the range MAAPVA and BBA of 0,05-1.0% from the content of active substance – KON-1. The limit of detection and limit of quantitation of MAAPVA were 0,8 µg/ml и 1.5 µg/ml and for BBA were 0,3 µg/ml и 0.5 µg/ml, respectively. Evaluation repeatability of methodic conducted in the range concentration MAAPVA and BBA of 2-15 µg/ml. The relative standard deviation (RSD) was no more than 10%. The determination of accuracy conducted on the three levels content of impurities in substance KON-1 (0,1, 0,5 and 0,75%). Limit of recovery of MAAPVA and BBA don’t get out from 75 – 125% which recommended to quantitation the impurity with standard of content from 0,1 to 1%.

Keywords

ОБРАЩЁННО-ФАЗНАЯ ВЭЖХ., ВАЛИДАЦИЯ, 4-БРОМБЕНЗАЛЬДЕГИД, МЕТИЛОВЫЙ ЭФИР АЦЕТИЛПИРОВИНОГРАДНОЙ КИСЛОТЫ, ПРОИЗВОДНЫЕ 3-ГИДРОКСИ-3-ПИРРОЛИН-2-ОНА, RESERVE PHASE HPLC.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold