Purification of X-ray contrast agents
US9938233B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2013 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Jul 5, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/0447
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a process for purification of iodinated X-ray contrast agents and in particular to purification of crude dimeric contrast agents, such as Iodixanol and Ioforminol. More particularly, the invention relates to purification of such X-ray contrast agents using membrane technology to remove monomeric impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.