| 摘要 |
The present invention provides biotinylated compounds useful for delivering a molecule to a target site, and methods of making biotinylated compounds. The biotinylated compounds are covalent conjugates of biotin and a diagnostic or therapeutic agent, and are stable to rapid degradation by biotinidase. The compounds of the invention are useful for delivering therapeutic or diagnostic agents to target-bound streptavidin or avidin conjugated cell-targeting agents, including monoclonal antibodies. The compound N-cysteinyl biotin is also provided.
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