Romana Rigger et al.
Journal of AOAC International, 100(5), 1365-1375 (2017-07-19)
In recent years, quantitative NMR (qNMR) spectroscopy has become one of the most important tools for content determination of organic substances and quantitative evaluation of impurities. Using Certified Reference Materials (CRMs) as internal or external standards, the extensively used qNMR