CN Patent

CN102040675A — 一种羟丙基-β-环糊精的制备方法

Assigned to Shijiazhuang Pharma Group Zhongnuo Pharmaceutical Shijiazhuang Co Ltd · Expires 2011-05-04 · 15y expired

What this patent protects

一种羟丙基-β-环糊精的制备方法，它包括醚化、中和、脱色、纳滤、树脂纯化、喷雾干燥六个步骤。本发明所述方法污染小、重量收率80%以上，制备得到的产品取代度范围窄、杂质含量低，适于作为药用辅料使用。

USPTO Abstract

一种羟丙基-β-环糊精的制备方法，它包括醚化、中和、脱色、纳滤、树脂纯化、喷雾干燥六个步骤。本发明所述方法污染小、重量收率80%以上，制备得到的产品取代度范围窄、杂质含量低，适于作为药用辅料使用。

Drugs covered by this patent

Patent Metadata

Patent number
CN102040675A
Jurisdiction
CN
Classification
—
Expires
2011-05-04
Drug substance claim
No
Drug product claim
No
Assignee
Shijiazhuang Pharma Group Zhongnuo Pharmaceutical Shijiazhuang 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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