Process for the production of DTPA-BIS anhydride

Process for the production of DTPA-BIS anhydride

Process for the production of DTPA-bis(anhydride) by reacting DTPA with acetic anhydride in pyridine under elevated temperature wherein the molar amount of pyridine is equal to or less than 6 times the molar amount of DTPA.

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Bibliographische Detailangaben
Hauptverfasser: ANDERSEN ELI R, OLAISEN VIDAR, HOLMAAS LARS T
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Process for the production of DTPA-bis(anhydride) by reacting DTPA with acetic anhydride in pyridine under elevated temperature wherein the molar amount of pyridine is equal to or less than 6 times the molar amount of DTPA.