Polyethylene glycol derivatives, process for preparing the same
US5342940A · kind A · utility
57Cited by
1References
2Claims
0Family size
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Key dates
| Filing date | Sep 13, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Sep 13, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K38/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
High purity polyethylene glycol derivatives of formula (I) are useful as protein modifiers of interferons, t-PA, EGF, various hormones, etc. The thus modified protein has minimized antigenicity, prolonged plasma half life, or improved transfer to tissue. A novel process for preparing high purity polyethylene glycol derivatives is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.