| 摘要 |
This invention relates to novel derivatives of imino diacetic acid of the formula: <IMAGE> wherein R1 is selected from the group consisting of: <IMAGE> <IMAGE> +TR <IMAGE> wherein X is halo (chloro, bromo or iodo) and R2 is lower alkyl of from 1-5 carbon atoms. It also relates to a novel diagnostic kit for hepatobiliary imaging comprising ingredients employed in the intravenous injection of a complex of technetium 99m, and an imino diacetic acid of the above formula. It also relates to a process for preparing said compounds by reaction of nitrilotriacetic acid anhydride and an amine of the formula R1NH2 wherein R1 is as defined hereinabove.
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