The present invention provides compounds of Formula I:
wherein: R1 is a label (e.g., a detectable group and an anti-tumor agent); L is present or absent and when present is a linking group; and x represents an integer from 1 to 10; or a pharmaceutically acceptable salt thereof. The compounds are useful for, among other things, identifying cysteine sulfenic acids in proteins and monitoring oxidative damage in proteins and cells. Adduct formation can be detected using analytical methods such as electrospray ionization mass spectrometry and fluorescence.
本发明提供了公式I的化合物:其中:R1是标记(例如,可检测的基团和抗肿瘤剂);L存在或不存在,当存在时为连接基团;x代表1到10的整数;或其药学上可接受的盐。该化合物可用于识别蛋白质中的半胱
氨酸
磺酸和监测蛋白质和细胞中的氧化损伤,其加合物形成可使用电喷雾离子化质谱和荧光等分析方法进行检测。