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:
Sep. 10, 2024
Filed:
Oct. 12, 2019
Applicants:
Zhejiang Huahai Pharmaceutical Co., Ltd., Zhejiang, CN;
Shanghai Aobo Pharmtech, Inc., Ltd., Shanghai, CN;
Assignees:
ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD, Zhejiang, CN;
SHANGHAI AOBO PHARMTECH, INC., LTD., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/87 (2006.01);
U.S. Cl.
CPC ...
C07D 307/87 (2013.01); C07B 2200/13 (2013.01);
Abstract
Provided herein is a method for preparing an Escitalopram bis-hydroxynaphtoate ((S)-(+)-1-(3-(-(dimethylamino)propyl)-1-(4-fluorophenyl)-1,3-dihydro-5-cyanisob enzofuranone) crystal form A. Said method is ecofriendly and non pollutive, and the obtained Escitalopram bis-hydroxynaphtoate crystal form A is highly pure and easy to reproduce.