The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2024
Filed:
Nov. 06, 2018
Zhejiang Huahai Pharmaceutical Co., Ltd, Zhejiang, CN;
Zhejiang Huahai Zhicheng Pharmaceutical Co., Ltd., Zhejiang, CN;
Jinsheng Lin, Zhejiang, CN;
Xiaofei Liu, Zhejiang, CN;
Dan Li, Zhejiang, CN;
Jing Wang, Zhejiang, CN;
Yue Li, Zhejiang, CN;
Wenquan Zhu, Zhejiang, CN;
Wenbin Chen, Zhejiang, CN;
Min Li, Zhejiang, CN;
Zhejiang Huahai Pharmaceutical Co., Ltd, Zhejiang, CN;
Zhejiang Huahai Zhicheng Pharmaceutical Co., Ltd., Zhejiang, CN;
Abstract
Provided are a pregabalin lactam methylene dimer and a preparation method therefor. The method comprises the following steps: dissolving pregabalin in a reaction solvent, reacting same with an aldehyde in an acidic system and isolating the obtained target product pregabalin lactam methylene dimer. The preparation method for pregabalin lactam methylene dimer provided by the present application has a simple operation, a high product yield, a good purity and a low cost.