| abstract |
The present invention relates to a triazanonane derivative indicated by the chemical formula 1 below, or a pharmaceutically acceptable salt thereof, and a method for preparing same, and the triazanonane derivative according to the present invention forms a complex with a metal-fluoride and displays an effect of increasing the labeling efficiency up to 78-90% when labeling F-18, thus enabling use in various radioactive medicine labeling. [Chemical formula 1] (In the chemical formula 1, R 1 , R 2 , A. E. X, n and m are as defined in the present description. |