C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 257/02 (2006.01)
Patent
CA 2431976
The invention relates to crystalline lithium complexes of N-(1-hydroxymethyl-2,3-dihydroxypropyl)-1,4,7-triscarboxymethyl- 1,4,7,10 tetraazacyclododecane, their production and the recovery of the salt-free gadolinium complex of N-(1-hydroxymethyl-2,3- dihydroxypropyl)-1,4,7-triscarboxymethyl-1,4,7,10 tetraazacyclododecane from the latter without the use of ion exchangers.
L'invention concerne des complexes de lithium du N-(1-hydroxyméthyl-2,3-dihydroxypropyl)-1,4,7-triscarboxyméthyl-1,4,7,10 tétraazacyclododécane, leur fabrication ainsi que l'obtention du complexe de gadolinium, exempt de sels, du N-(1-hydroxyméthyl-2,3-dihydroxypropyl)-1,4,7-triscarboxyméthyl-1,4,7,10 tétraazacyclododécane à partir de ceux-ci, sans recourir à l'utilisation d'échangeurs d'ions.
Blaszkiewicz Peter
Hoffmann Holger
Petrov Orlin
Platzek Johannes
Bayer Schering Pharma Aktiengesellschaft
Marks & Clerk
Schering Aktiengesellschaft
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