Complex of gadolinium and a chelating ligand derived from a diastereoisomerically enriched PCTA and preparation and purification process
US11370804B2 · kind B2 · utility
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3References
23Claims
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Key dates
| Filing date | Aug 16, 2021 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Aug 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a complex of formula (II) constituted of at least 90% of a diastereoisomeric excess comprising a mixture of isomers II-RRR and II-SSS of formulae:The present invention also relates to a process for preparing and purifying said complex of formula (II), and also to a composition comprising said complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.