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.:

US 10696629 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 30, 2020

Filed:

Jul. 07, 2017
Applicant:

Chongqing Runze Pharmaceutical Company Limited, Chongqing, CN;

Inventor:

Lei Ye, Chongqing, CN;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 207/273 (2006.01);
U.S. Cl.
CPC ...
C07D 207/273 (2013.01); C07B 2200/13 (2013.01);
Abstract

The present invention provides a crystalline form of dextral oxiracetam. The crystalline form has a diffraction peak when a diffraction angle, 2θ, is 17.12±0.2°, 18.88±0.2°, 19.24±0.2°, 21.18±0.2°, 24.88±0.2°. The crystalline form having oxiracetam can promote synthesis of phosphorylcholine and phosphoethanolamine, boosts cerebral metabolism, has a stimulating function on a specific central nervous pathway through a blood-brain barrier, improves the intelligence and memory, has an obvious effect on a memory dysfunction, and has special biologic activity in the field of sedation and the antiepileptic field. The method for preparing the crystalline form is simple and is suitable for industrial production.


Find Patent Forward Citations

Ye, Lei. (2020). Crystalline form of dextral oxiracetam, preparation method therefor and use thereof (U.S. Patent No. 10696629). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10696629

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