发明名称 |
Method and reagent for making a radiopharmaceutical composition based on technetium - 99m. |
摘要 |
<p>A method of making a radiopharmaceutical composition by mixing an aqueous solution of pertechnetate with a reducing agent comprising tin metal or stannous ion to reduce the pertechnetate and a complexing agent to form a complex with the reduced technetium, is characterized by incorporating nitrate and or nitrite in an amount to diminish oxidation of Sn<Sup>2-</Sup> to Sn<Sup>4-</Sup>, and hence to prevent re-oxidation of technetium to pertechnetate, during preparation and storage of the complex. Nitrate and nitrite are superior to organic antioxidants previously proposed.</p><p>A reagent for the purpose comprises the reducing agent, the complexing agent and tne nitrate and,or nitrite usually in a sterile freeze-dried state.</p> |
申请公布号 |
EP0046067(A1) |
申请公布日期 |
1982.02.17 |
申请号 |
EP19810303608 |
申请日期 |
1981.08.06 |
申请人 |
AMERSHAM INTERNATIONAL PLC |
发明人 |
BROCKAS, ANTHONY;ABRAHAMS, ROY;KELLY, JAMES DUNCAN |
分类号 |
A61K51/04;(IPC1-7):61K49/02 |
主分类号 |
A61K51/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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