C - Chemistry – Metallurgy – 07 – B
Patent
C - Chemistry, Metallurgy
07
B
C07B 59/00 (2006.01) A61K 51/04 (2006.01) C07F 13/00 (2006.01)
Patent
CA 2064063
ABSTRACT The process of the present invention includes prepar- ing a first aqueous solution of rhenium in the form of rad- ioactive perrhenate, wherein the concentration of rhenium in said solution is within the range of about 5 x 10-6 M to about 2 x 10-3 M, and then reducing and complexing the rad- ioactive perrhenate by mixing a second solution or lyophil- ized solid with the first solution. The second solution or lyophilized solid comprises a ligand which complexes with the radioactive perrhenate and a reductant wherein the re- ductant is present in the second solution at a concentra- tion in the range of about 0.005 M to about 0.020 M and the ligand is present in the second solution at a concentration in the range of about 0.01 M and about 0.15 M. The pH of the resultant solution is within the range of about 1.5 to about 5.5.
Mallinckrodt Inc.
Osler Hoskin & Harcourt Llp
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