Invention Grant
- Patent Title: Method for preparing polyethylene glycol dialdehyde derivative
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Application No.: US16074592Application Date: 2017-02-21
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Publication No.: US10781285B2Publication Date: 2020-09-22
- Inventor: Yu Rim Kim , Eun Rang Park , Bo Sung Kwon , Young Bum Cho , Jun Ho Chu
- Applicant: Hanmi Fine Chemical Co., Ltd.
- Applicant Address: KR
- Assignee: Hanmi Fine Chemical Co., Ltd.
- Current Assignee: Hanmi Fine Chemical Co., Ltd.
- Current Assignee Address: KR
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6c90ad3c
- International Application: PCT/KR2017/001906 WO 20170221
- International Announcement: WO2017/146443 WO 20170831
- Main IPC: C08G65/331
- IPC: C08G65/331 ; A61K31/11 ; A61K47/60 ; C08G65/334 ; C08G65/48 ; C08K5/07
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.
Public/Granted literature
- US20190040196A1 Method For Preparing Polyethylene Glycol Dialdehyde Derivative Public/Granted day:2019-02-07
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