摘要 |
The invention provides a method for introducing 1,4,7,10-tetraazacyclododecane-N,N′,N″,N′″-tetraacetic acid (DOTA) into a compound such as a peptide. The method comprises a first step for preparing a mixed liquid of DOTA having no protecting group and dimethylsulfoxide, and a second step for contacting the mixed liquid with the compound carried on a solid-phase carrier.
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