Orally effective ion chelators

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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2605005H, 564154, C09F 500, C09F 506

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046844821

ABSTRACT:
Compounds are described of the general formula: ##STR1## wherein: R.sub.1 is acyl of the formula --C(.dbd.O)--R.sub.5 ; R.sub.2, R.sub.3, and R.sub.4 are each selected from the group consisting of hydrogen and acyl of the formula:

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