In solution Cu-67 is usually in divalent state. It can be radiolabelled with macrocyclic chelators. DOTA is being used, but other, specific copper chelators such as MeCOSar may provide improved stability.
Cu-67 decays by beta-minus emission with a half-life of 2.576(5) days to stable Zn-67. It emits a low energy beta spectrum with 145 keV average energy and 561 keV maximum energy based on branching ratios measured in . In addition to beta-minus emission it also emits low energy conversion and Auger electrons , thus emitting in total about 1.2 electrons (with energies above 7 keV) per decay.
The radiochemical separation is performed at ARRONAX (Nantes, France) and activity will be shipped from there to the users in form of CuCl2 solution.
Examples of use
|Branching Ratio/Decay||100% β-|
|Purification||2 steps column separation|
|Chemical Form||In 0.1 M HCl|
|Specific Activity||Not yet defined, (measured by ICP-OES)|
|Radionuclidic Purity||Not yet defined|
|Radiochemical Purity||Not yet defined, (measured by ICP-OES)|
|Identification||184.6 keV gamma line present|
|Appearance||Clear and colourless solution|
|Activity available||1 GBq|
|Availability||On demand (planning in advance), starting September 2022|