Support by National Natural Science Foundation of China (No. 20771011 and 21071010);the Ministry of Science and Technology of China (No. 2006CB705700)
The cyclic peptide YG5 and the t-butyloxycarbonyl(Boc)-modified analog(Boc-YG5) were labeled with radioiodine.The radiochemical purity of 131I-YG5 or 131I-Boc-YG5 was almost 100% after purification by RP-HPLC.Biodistr...