Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Content detection method of alprostadil injection

A technology of dil injection and detection method, applied in the field of content detection of alprostadil injection, can solve problems such as the reduction of β-naphthol peak area, and achieves improved detection precision, improved sampling precision, reliable column Effects of post-derivatization methods

Active Publication Date: 2015-05-13
SHANGHAI JINGFENG PHARMA
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of content detection method of alprostadil injection, to overcome the weak point in the above-mentioned detection method, this method detection is accurate, effectively solved the internal standard substance β in the content detection of alprostadil injection - The problem of reduced peak area of ​​naphthol

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Content detection method of alprostadil injection
  • Content detection method of alprostadil injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0035] A kind of content detection method of alprostadil injection, the steps are: prepare β-naphthol internal standard solution; Need testing solution and reference substance solution are prepared into the β-naphthol internal standard solution containing identical concentration, then, adopt Alprostadil is separated by column by high performance liquid chromatography, and the post-column derivatization method is used as the reaction liquid in 1mol / L KOH solution, and the temperature of the reaction pool is 60°C. Finally, alprostadil and β -Naphthol peak area, calculate alprostadil content with internal standard method.

[0036] The preparation method of β-naphthol internal standard solution is to take 25 mg of β-naphthol, accurately weigh it, put it in a 50ml measuring bottle, add absolute ethanol to dissolve and dilute to the scale, measure 5ml, put it in a 50ml measuring bottle, add methanol to dilute To the mark, shake well, as the first solution; take 5ml of the first solu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a content detection method of an alprostadil injection. The content detection method of the alprostadil injection comprises the following steps: preparing a beta-naphthol internal standard solution; preparing beta-naphthol internal standard solutions with the same concentration from a test solution and a reference solution, then carrying out column separation on alprostadil by using a high performance liquid chromatography, taking 1 mol / L of a KOH solution as a reaction solution by using a post-column derivatization method, controlling the temperature of a reaction tank to be 60 DEG C, finally detecting alprostadil and beta-naphthol peak area on a wavelength of 278 nm, and calculating the content of alprostadil by using an internal standard method. By adopting the method provided by the invention to detect the content of the alprostadil injection, the problem of small beta-naphthol peak area in the existing method for detecting the content of the alprostadil injection is effectively solved, the detection accuracy of the content of the alprostadil injection is improved, and the content detection method of the alprostadil injection is applicable to detection of the content of the alprostadil injection in different prescriptions.

Description

Technical field: [0001] The invention relates to a method for detecting the content of alprostadil injection. Background technique: [0002] Alprostadil is also known as prostaglandin E1, English name: PROSTAGLANDIN E1, English abbreviation PGE1, chemical name: (1R,2R,3R)-3-hydroxyl-2(E)-(3S)-3-hydroxyl-1-octyl Alkenyl-5-oxocyclopentaneheptanoic acid, molecular formula: C 20 h 34 o 5 , molecular weight: 354.49. The structural formula is as follows: [0003] [0004] For the content analysis method of alprostadil injection, it is comparatively common to use HPLC method to cooperate post-column derivatization at present, use the phosphate buffer solution and acetonitrile (3:1) that pH value is 6.0 as mobile phase and dilute constant volume β- Naphthol internal standard solution and prostadil reference substance solution, because phosphate buffer saline is mixed with acetonitrile (3:1) with mobile phase, some lipophilic substances in alprostadil injection prescription c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N30/02
Inventor 叶湘武邱永锋刘华付爱玲
Owner SHANGHAI JINGFENG PHARMA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com