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. 13, 2017
Filed:
Sep. 25, 2014
Beijing Lunarsun Pharmaceutical Co., Ltd., Chaoyang District, Beijing, CN;
Beijing Lunarsun Pharmaceutical Co., LTD., Beijing, CN;
Abstract
Disclosed are a new S crystal form of ivabradine hydrochloride, and preparation method and pharmaceutical composition thereof. The S crystal form of ivabradine hydrochloride has a powder diffraction pattern having characteristic peaks at degrees two-theta positions of 8.5±0.2, 11.5±0.2, 14.6±0.2, 15.3±0.2, 16.1±0.2, 17.1±0.2, 17.4±0.2, 17.8±0.2, 18.6±0.2, 19.3±0.2, 21.6±0.2, 21.9±0.2, 27.2±0.2, and, by DSC measurement, has an endothermic crystal transformation peak as a characteristic peak at 111.6° C. and an exothermic crystal transformation peak as a characteristic peak at 136.9° C., and a melting decomposition peak as a characteristic peak at 194.9° C. The S crystal form products are easy to dry, have high purity and stability, and are convenient for long-term storage without particular temperature and humidity requirements. The preparation method thereof facilitates industrial production, and has great application value and market value.