Method for preparing polyethylene glycol dialdehyde derivative
US10781285B2 · kind B2 · utility
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3References
15Claims
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Key dates
| Filing date | Feb 21, 2017 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/07
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to an improved method for preparing a high purity polyethylene glycol dialdehyde derivative. The preparation method can provide the polyethylene glycol dialdehyde derivative suitable as a raw material for pharmaceuticals because of high purity and terminal activity, by using PEG-diacetal, which is prepared by reacting polyethyleneglycol methanesulfonate with dialkoxy-1-propanol, as an intermediate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.