CN Patent

CN106397442B — 一种瑞加德松的纯化方法

Assigned to Shanghai Institute of Pharmaceutical Industry · Expires 2020-03-27 · 6y expired

What this patent protects

本发明公开了一种瑞加德松的纯化方法。该方法包括下列步骤:在碱水溶液的作用下,将含杂质A的瑞加德松粗品与极性有机溶剂混合,析晶,即可;其中,所述的瑞加德松粗品中杂质A的含量为0.1%~1.0%。本发明的纯化方法能够高效除去瑞加德松粗品中的杂质A,得到的瑞加德松产品中杂质A含量在0.10%以下,最低含量在0.04%以下,进一步提高瑞加德松产品的HPLC纯度,使最后得到瑞加德松产品的HPLC纯度在99.80%以上;产品质量好,完全符合ICH Q3a的杂质限量标准。

USPTO Abstract

本发明公开了一种瑞加德松的纯化方法。该方法包括下列步骤:在碱水溶液的作用下,将含杂质A的瑞加德松粗品与极性有机溶剂混合,析晶,即可;其中,所述的瑞加德松粗品中杂质A的含量为0.1%~1.0%。本发明的纯化方法能够高效除去瑞加德松粗品中的杂质A,得到的瑞加德松产品中杂质A含量在0.10%以下,最低含量在0.04%以下,进一步提高瑞加德松产品的HPLC纯度,使最后得到瑞加德松产品的HPLC纯度在99.80%以上;产品质量好,完全符合ICH Q3a的杂质限量标准。

Drugs covered by this patent

Patent Metadata

Patent number
CN106397442B
Jurisdiction
CN
Classification
Expires
2020-03-27
Drug substance claim
No
Drug product claim
No
Assignee
Shanghai Institute of Pharmaceutical Industry
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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