magnetic resonance (NMR) spectroscopy, particularly N-di- and tri-alkylated ureas because of the absence of adjacent protons. In the present study, electrospray ionization tandem mass spectrometry has been used to differentiate positional isomeric pairs and to characterize a series of N,N′-substituted ureas, as these compounds have significant importance for drug discovery. Additionally, urea is an essential
通过核磁共振 (NMR) 光谱发现N,N'-取代
脲的表征具有挑战性,尤其是N-二-和三-烷基化
脲,因为没有相邻的质子。在本研究中,电喷雾电离串联质谱已用于区分位置异构对并表征一系列N,N'-取代的
脲,因为这些化合物对药物发现具有重要意义。此外,
尿素是几种
生物活性化合物以及各种临床批准的疗法中必不可少的功能。