CN Patent

CN104829572B — 达格列净新晶型及其制备方法

Assigned to Jiangsu Hansoh Pharmaceutical Group Co Ltd · Expires 2019-01-04 · 7y expired

What this patent protects

本发明涉及达格列净新晶型及其制备方法。具体而言，本发明涉及式（I）的达格列净的新晶型，这种晶型在以2θ角度和晶面间距（d值）表示的X‑射线粉末衍射图谱中在约4.318（20.45）处具有特征吸收峰，可以通过将达格列净溶解在良性有机溶剂中，再加入不良溶剂搅拌析晶，过滤，干燥而制得。本发明的达格列净新晶型具有以下优良特性：溶解性好，引湿性小，稳定性高，制备可重现性好。

USPTO Abstract

本发明涉及达格列净新晶型及其制备方法。具体而言，本发明涉及式（I）的达格列净的新晶型，这种晶型在以2θ角度和晶面间距（d值）表示的X‑射线粉末衍射图谱中在约4.318（20.45）处具有特征吸收峰，可以通过将达格列净溶解在良性有机溶剂中，再加入不良溶剂搅拌析晶，过滤，干燥而制得。本发明的达格列净新晶型具有以下优良特性：溶解性好，引湿性小，稳定性高，制备可重现性好。

Drugs covered by this patent

Patent Metadata

Patent number
CN104829572B
Jurisdiction
CN
Classification
—
Expires
2019-01-04
Drug substance claim
No
Drug product claim
No
Assignee
Jiangsu Hansoh Pharmaceutical Group Co Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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