Dihydrazide compounds, preparation and uses thereof
US8067636B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Sep 17, 2007 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Jun 9, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C323/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are dihydrazide compounds having formula (I) or (II), wherein R1-R4 are alkylene, substituted alkylene, aryl or polyether radical. The preparation and uses for producing medical hydrogel and medicine controlled releasing carrier of said dihydrazide compounds are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.