QUANTITATIVE 1H NMR SPECTROSCOPY METHOD FOR DETERMINATION OF ANTHRAQUINONE DERIVATIVES IN EXTRACTS FROM RUBIA TINCTORUM L. ROOTS AND RHIZOMES Article Vasil’ev Vasilii, Sheremeta Anzhelika, Ivlev Vasilii, Goriainov Sergey, Hajjar Fadi, Esparza Cesar, Platonov Evgeniy, Khromov Arkadiy, Kolesnov Alexandr, Romashchenko Victoria, Kalabin Gennady Scientia Pharmaceutica. MDPI. Vol. 92. 2024. 24 p.