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. 06, 2018
Filed:
Oct. 15, 2014
Applicant:
Sunshine Lake Pharma Co., Ltd., Dongguan, Guangdong, CN;
Inventors:
Assignee:
SUNSHINE LAKE PHARMA CO., LTD., Dongguan, Guangdong, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/04 (2006.01); A61K 31/506 (2006.01);
U.S. Cl.
CPC ...
C07D 471/04 (2013.01); A61K 31/506 (2013.01);
Abstract
A novel crystalline form or amorphous of formula (I) and preparation method thereof are disclosed in present invention, wherein the novel crystalline form is substantially pure crystalline form I, form II, form III or form IV. The novel crystalline forms disclosed herein have good solubility, low hydroscopicity and good stability at high temperature (60° C.), high humidity (RH is 90%±5%) and/or under light (4500+/−500 Lux), which benefit for storage, meet the requirements of drug stability and therefore, making formula (I) suitable for formulation preparation and with high bioavailability.