自己设计的，能做可以留下联系方式 95%

5-(1H-indol-3-yl)-2-mercaptopentanoic acid
Chemical Formula: C13H15NO2S
Molecular Weight: 249.3280
m/z: 249.0823 (100.0%), 250.0857 (14.1%), 251.0781 (4.5%)
Elemental Analysis: C, 62.63; H, 6.06; N, 5.62; O, 12.83; S, 12.86