CN Patent

CN103439446A — 使用rp-hplc法测定桦树皮中桦木醇含量的方法

Assigned to ZHANGJIAGANG WEISHENG BIOLOGICAL PHARMACEUTICAL CO Ltd · Expires 2013-12-11 · 12y expired

What this patent protects

本发明涉及一种药物的含量检测领域,具体涉及一种RP-HPLC法测定桦树皮中桦木醇含量的方法。本发明色谱条件为:C 18 (4.6×250mm,5μm),流动相为甲醇-0.1%磷酸水溶液=80∶20,使用紫外检测器检测,检测波长为210nm,桦树皮提取液用甲醇超生提取。本发明检测方法中样品浓度与峰面积线性关系好、准确性高、具有良好的重现性和稳定性。测定桦木醇线性范围为0.1μg/ml~50μg/ml,线性相关系r=1,桦树皮提取液重复实验RDS=0.24%,稳定实验RDS=0.687%。

USPTO Abstract

本发明涉及一种药物的含量检测领域,具体涉及一种RP-HPLC法测定桦树皮中桦木醇含量的方法。本发明色谱条件为:C 18 (4.6×250mm,5μm),流动相为甲醇-0.1%磷酸水溶液=80∶20,使用紫外检测器检测,检测波长为210nm,桦树皮提取液用甲醇超生提取。本发明检测方法中样品浓度与峰面积线性关系好、准确性高、具有良好的重现性和稳定性。测定桦木醇线性范围为0.1μg/ml~50μg/ml,线性相关系r=1,桦树皮提取液重复实验RDS=0.24%,稳定实验RDS=0.687%。

Drugs covered by this patent

Patent Metadata

Patent number
CN103439446A
Jurisdiction
CN
Classification
Expires
2013-12-11
Drug substance claim
No
Drug product claim
No
Assignee
ZHANGJIAGANG WEISHENG BIOLOGICAL 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.

Track this patent

Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.