CN Patent

CN104151182B — 一种溴芬酸钠倍半水合物的制备方法

Assigned to Guangdong Zhongsheng Pharmaceutical Co Ltd · Expires 2016-03-30 · 10y expired

What this patent protects

本发明的目的在于提供一种溴芬酸钠倍半水合物的制备方法,该制备方法包括以下步骤:(1)将溴芬酸钠、抗氧化剂加入至水和有机醇的混合溶剂中,加热,溶解,加入pH调节剂调节pH至7.0~10.5;(2)向步骤(1)得到的溶液中加入反溶剂,冷却至30~35℃,加入溴芬酸钠一水合物、溴芬酸钠倍半水合物或其混合物作为晶种,搅拌;(3)冷却,析晶,收集晶体,干燥,得到溴芬酸钠倍半水合物。该制备方法避免了醚类试剂的使用,反应条件温和,环境效益好,制备的溴芬酸钠倍半水合物的纯度高。

USPTO Abstract

本发明的目的在于提供一种溴芬酸钠倍半水合物的制备方法,该制备方法包括以下步骤:(1)将溴芬酸钠、抗氧化剂加入至水和有机醇的混合溶剂中,加热,溶解,加入pH调节剂调节pH至7.0~10.5;(2)向步骤(1)得到的溶液中加入反溶剂,冷却至30~35℃,加入溴芬酸钠一水合物、溴芬酸钠倍半水合物或其混合物作为晶种,搅拌;(3)冷却,析晶,收集晶体,干燥,得到溴芬酸钠倍半水合物。该制备方法避免了醚类试剂的使用,反应条件温和,环境效益好,制备的溴芬酸钠倍半水合物的纯度高。

Drugs covered by this patent

Patent Metadata

Patent number
CN104151182B
Jurisdiction
CN
Classification
Expires
2016-03-30
Drug substance claim
No
Drug product claim
No
Assignee
Guangdong Zhongsheng Pharmaceutical 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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