Method for manufacturing diethylene triamine pentaacetic acid derivative
US7767844B2 · kind B2 · utility
89Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2005 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Aug 3, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C227/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention at first prepares a penta-alkyl DTPA and then processes a regioselective hydrolysis over the penta-alkyl DTPA while using a metal ion as a catalyst to obtain a tetra-alkyl DTPA, where, by the above two steps, a monoreactive DTPA derivative is manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.