https://www.selleckchem.com/pr....oducts/l-selenomethi
Gallotannins extracted from gallnuts are commonly added to wine to improve its properties. They consist of mixtures of galloylester derivatives of glucose. However, their composition and properties are not well established. In this study, methods based on liquid chromatography coupled to UV-visible detection and mass spectrometry, size exclusion chromatography and 1D (31P) and 2D (1H DOSY, 31P TOCSY, 1H/13C HSQC, HMBC) NMR spectroscopy have been implemented for extensive chemical characterization of three commercial gallnut t
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