Acid salt forms of polymer-drug conjugates and alkoxylation methods
US9320808B2 · kind B2 · utility
4Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Among other aspects, provided herein is a mixed-acid salt of a water-soluble polymer-drug conjugate, along with related methods of making and using the same. The mixed-salt acid salt is stably formed, and appears to be more resistant to hydrolytic degradation than the corresponding predominantly pure acid salt or free base forms of the polymer-drug conjugate. The mixed acid salt is reproducibly prepared and recovered, and provides surprising advantages over non-mixed acid salt forms of the water-soluble polymer drug conjugate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.