CN Patent

CN110320288A — 含acei的组合物、有关物质的分离检测方法

Assigned to Nanjing Bowei Pharmaceutical Co Ltd · Expires 2019-10-11 · 7y expired

What this patent protects

本发明提供一种同时测定马来酸依那普利叶酸及其有关物质的分析检测方法，通过高效液相色谱仪，以辛烷基键合硅胶为填充剂，pH为2.0～3.0的磷酸盐缓冲溶液和乙腈为流动相，梯度洗脱，检测波长为210nm～220nm，柱温40℃～60℃。本发明采用梯度洗脱实现各杂质的有效分离，各吸收峰的分离度＞5，进样精密度良好，RSD＜1％，方法耐用性好，系统适用性溶液稳定性好。

USPTO Abstract

本发明提供一种同时测定马来酸依那普利叶酸及其有关物质的分析检测方法，通过高效液相色谱仪，以辛烷基键合硅胶为填充剂，pH为2.0～3.0的磷酸盐缓冲溶液和乙腈为流动相，梯度洗脱，检测波长为210nm～220nm，柱温40℃～60℃。本发明采用梯度洗脱实现各杂质的有效分离，各吸收峰的分离度＞5，进样精密度良好，RSD＜1％，方法耐用性好，系统适用性溶液稳定性好。

Drugs covered by this patent

Patent Metadata

Patent number
CN110320288A
Jurisdiction
CN
Classification
—
Expires
2019-10-11
Drug substance claim
No
Drug product claim
No
Assignee
Nanjing Bowei 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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