Process for the preparation of 1,4,7,10-tetraazacyclododecane
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United States of America Patent
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Nov 25, 2003
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N/A
app pub date -
Oct 11, 2001
filing date -
Mar 9, 1999
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Abstract
1,4,7,10-Tetraazacyclodecane, a precursor for the synthesis of macrocylic chelating agents for metal ions such as gadolinium, is prepared efficiently as a highly pure product on an industrial scale.
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