Most publications dealing with QGY-7703 say, they obtained the cells from Shanghai Institute of Cell Biology and Biochemistry (compare http://onlinelibrary.wiley.com/doi/10.1016/j.febslet.2008.12.029/full ). Maybe you should contact the Institute. Good luck

Dear Sridharan,

This cell line is available at The Cell Bank of Type Culture Collection of Chinese Academy of Sciences.

More information (including phone and email): http://www.wfcc.info/ccinfo/collection/by_id/793

Moreover, this Cell Bank is associated with Shanghai Institute of Cell Biology, Chinese Academy of Sciences; see contact: http://www.sibcb.ac.cn/ep6-1.asp

Good luck!!

Thanks for your advice professor, i will contact CAS.