CN Patent

CN105017224A — 一种德拉沙星葡甲胺晶型的制备方法

Assigned to Yangtze River Pharmaceutical Group Co Ltd · Expires 2015-11-04 · 11y expired

What this patent protects

本发明公开了一种德拉沙星葡甲胺晶型的制备方法，包括将德拉沙星葡甲胺、葡甲胺于水与有机溶剂的混合溶剂中，搅拌溶解；热过滤，滤液冷却、保温搅拌至有固体析出，然后继续降温并保温析晶；过滤，滤饼真空干燥即得产品。该方法重复性好、操作简便、产物收率和纯度高，适合工业化生产。

USPTO Abstract

本发明公开了一种德拉沙星葡甲胺晶型的制备方法，包括将德拉沙星葡甲胺、葡甲胺于水与有机溶剂的混合溶剂中，搅拌溶解；热过滤，滤液冷却、保温搅拌至有固体析出，然后继续降温并保温析晶；过滤，滤饼真空干燥即得产品。该方法重复性好、操作简便、产物收率和纯度高，适合工业化生产。

Drugs covered by this patent

Patent Metadata

Patent number
CN105017224A
Jurisdiction
CN
Classification
—
Expires
2015-11-04
Drug substance claim
No
Drug product claim
No
Assignee
Yangtze River 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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