Invention Grant
- Patent Title: Crystal form D of pyrazine-2(1H)-ketone compound and preparation method therefor
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Application No.: US17633299Application Date: 2020-08-04
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Publication No.: US11597722B2Publication Date: 2023-03-07
- Inventor: Zhiliang Chen , Zhiyi Luo , Yichao Zhuang , Jinxia Lin , Longhui Gao , Zhifei Fu , Miaorong Luo , Yang Zhang , Jian Li , Shuhui Chen
- Applicant: ZHANGZHOU PIEN TZE HUANG PHARMACEUTICAL CO., LTD.
- Applicant Address: CN Fujian
- Assignee: ZHANGZHOU PIEN TZE HUANG PHARMACEUTICAL CO., LTD.
- Current Assignee: ZHANGZHOU PIEN TZE HUANG PHARMACEUTICAL CO., LTD.
- Current Assignee Address: CN Fujian
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: CN201910731106.1 20190808,CN201911059942.6 20191101
- International Application: PCT/CN2020/106901 WO 20200804
- International Announcement: WO2021/023195 WO 20210211
- Main IPC: C07D403/14
- IPC: C07D403/14
Abstract:
The present invention disclosed a crystal form of pyrazine-2(1H)-ketone compound and a preparation method therefor. Specifically disclosed is a method for preparing a compound of formula (II) and a crystal form thereof.
Public/Granted literature
- US20220281853A1 CRYSTAL FORM D OF PYRAZINE-2(1H)-KETONE COMPOUND AND PREPARATION METHOD THEREFOR Public/Granted day:2022-09-08
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