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:
Jun. 10, 2014
Filed:
May. 15, 2008
Zhijun Tang, Shanghai, CN;
Zhonghao Zhuo, Shanghai, CN;
Yunman Zheng, Shanghai, CN;
Bingming He, Shanghai, CN;
Huichun Yang, Shanghai, CN;
Jushang Zheng, Shanghai, CN;
Zhijun Tang, Shanghai, CN;
Zhonghao Zhuo, Shanghai, CN;
Yunman Zheng, Shanghai, CN;
Bingming He, Shanghai, CN;
Huichun Yang, Shanghai, CN;
Jushang Zheng, Shanghai, CN;
Shanghai Techwell Biopharmaceutical Co., Ltd, Shanghai, CN;
Abstract
The present invention relates to a lubiprostone crystal, the method for the preparation thereof, and a pharmaceutical composition or kit comprising the same, as well as the use of said crystal in the preparation of a medicament for the treatment of gastrointestinal tract diseases, especially constipation. The X-ray powder diffraction pattern of said crystal comprises characteristic peaks measured at the following 2θ reflection angles: 14.6±0.2°, 17.0±0.2° and 19.6±0.2°. As compared to amorphous lubiprostone, the crystal of the present invention has the advantages of relative high purity, stable properties and easy-for-storage and use.