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:
Feb. 18, 2020
Filed:
Sep. 28, 2016
Zhucheng Haotian Pharm Co., Ltd, Weifang, Shandong, CN;
ZHUCHENG HAOTIAN PHARM CO., LTD., Weifang, Shandong, CN;
Abstract
The present invention relates to the technical field of chemical drugs and crystal form processes, and to a pyrroloquinoline quinine B crystal form and a preparation method therefor. The present invention comprehensively characterizes the pyrroloquinoline quinine B crystal form by virtue of means such as X-ray powder diffraction analysis, thermo-gravimetric analysis, and differential scanning calorimetry analysis so as to find the fact that the pyrroloquinoline quinine B crystal form is high in crystallinity and low in hygroscopicity, and a regular crystal form can be formed, thereby facilitating process treatment and improvement of physical and chemical properties of a medicine, and improving the patent medicine performance. The preparation method for the pyrroloquinoline quinone B crystal form provided in the present invention is simple, easy to control, and high in reproducibility.