[EN] PROCESS FOR THE PORDUCTION OF DTPA-BIS ANHYDRIDE<br/>[FR] PROCEDE DE PRODUCTION DE DTPA-BIS ANHYDRIDE
申请人:AMERSHAM HEALTH AS
公开号:WO2005058846A1
公开(公告)日:2005-06-30
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.