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:
Jul. 26, 2022
Filed:
Jun. 25, 2019
Yamasa Corporation, Choshi, JP;
Yamasa Corporation, Choshi, JP;
Abstract
Among commonly known 3',3′-cGAMP is a lyophilized product. The lyophilized product needs a lyophilizer during the manufacture. This, itself, causes a limitation in scale-up for mass production. Thus, it has been desired to develop and obtain a large amount of their crystals in a simple manner without using a special apparatus such as a lyophilizer. In addition, conventionally known lyophilized products or ethanol precipitates are highly hygroscopic. Hence, the present invention addresses the problem of providing an easy-to-handle crystal with excellent shelf life. A hydrate crystal of 3′,3′-cGAMP according to the invention may be either a crystal of alkali metal salt or a crystal of free acid. Either is less hygroscopic than existing powder. Thus, each is easy to handle in various purposes and is thus useful as a pharmaceutical raw material or the like.