Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for detecting Tadalafei and derivative thereof

A technology for tadalafil and derivatives, applied in the field of detection of tadalafil and its derivatives, can solve the problems of lack of testing equipment, inability to identify new derivatives, and difficulty in screening, achieving strong specificity, sensitive response, The effect of high accuracy

Active Publication Date: 2007-08-22
BEIJING INST FOR DRUG CONTROL
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no rapid test method for tadalafil released in the food and drug testing industry. For pharmacies and grassroots drug control institutes, due to the lack of advanced testing equipment, it is difficult to identify whether food, traditional Chinese medicine preparations and health foods contain prohibited drugs. Therefore, the establishment Simple, accurate and fast identification method has special significance
In addition, some manufacturers continue to manufacture derivatives of the above-mentioned compounds in order to evade the inspection of law enforcement agencies, and new derivatives cannot be identified even by relying on HPLC methods

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
  • Method for detecting Tadalafei and derivative thereof
  • Method for detecting Tadalafei and derivative thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the method for detecting tadalafil

[0023] Principle of the method:

[0024] Tadalafil can react with molybdenum sulfuric acid (obtained by the reaction of sodium molybdate and sulfuric acid) to produce a blue-purple solution. Although there are some other specific alkaloids that can undergo Frhde reaction, the color of the resulting solution is different due to the difference in structure. The reaction colors of other specific alkaloids Frhde are shown in Table 1:

[0025] Table 1: Reaction colors of other specific alkaloids Frhde

[0026] Alkaloids

Color rendering

Alkaloids

Color rendering

morphine

Purple→brown green

Emetine

dark green

codeine

green → blue

strychnine

red purple

Ethylmorphine

green → blue

Colchicine

yellow green

Apomorphine

purple → green

Aconitine

yellow

Narcotine

green → red yellow

Toxicine

colorless → yellow

...

Embodiment 2

[0045] Embodiment 2, the accuracy test that the inventive method detects tadalafil

[0046] Commercially available 39 batches of samples are detected by the method of the present invention, meanwhile, according to the State Drug and Food Administration drug inspection supplementary inspection method and inspection item approval document (2006009, released on March 14th, 2006), HPLC-MS-MS Methods Check tadalafil, sildenafil citrate, vardenafil hydrochloride, the results are shown in Table 3.

[0047] Table 3: Test results of multiple batches of samples

[0048] product name

dosage form

Sampling volume

Color rendering result

mass spectrometry results

sample 1

capsule

Contents of 1 capsule

blue-purple

tadalafil

sample 2

pill

1 pill

yellowish brown

Does not contain *

[0049] sample 3

pill

1 pill

yellowish brown

Does not contain *

Sample 4

piece

1 piece finel...

Embodiment 3

[0054] Embodiment 3, the method of the present invention detects tadalafil derivatives

[0055] The method of the present invention can not only detect tadalafil, but also detect tadalafil derivatives, and its derivatives mainly contain methyl groups on N-heterocycles surrounded by amino groups (-NH 2 ) is substituted, see formula II; and the methyl group on the N-containing heterocycle is ethyl (-CH 2 CH 3 ), hydroxymethyl (-CH 2OH) substituted derivatives. The process of detecting tadalafil derivatives is the same as that of tadalafil, and the judgment of positive results is also the same.

[0056]

[0057] For the HPLC-MS-MS method to detect the capsule sample containing the tadalafil derivative (aminotadalafil) with the structure of formula II, take the contents of 1 capsule for detection, and the color development result is blue-purple, which is a positive result.

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

No PUM Login to View More

Abstract

The invention discloses a method to detect Tadalafil and its derivative: (1) Color reaction. Make color reaction by adding vitriol solution of sodium molybdate. (2) Result estimation. If color reaction presents blue violet, there are Tadalafil and its derivative in test samples. The method adopts special Flood reaction of Tadalafil is for testing, which has merits of quick, simple, high sensitivity and strong property etc.

Description

technical field [0001] The invention relates to a method for detecting tadalafil and its derivatives. Background technique [0002] Tadalafil is a second-generation phosphodiesterase inhibitor developed by Eli Lilly and Company of the United States. It is clinically used to treat male erectile dysfunction (ED). Its structural formula is shown in formula I, and its molecular formula is C 22 h 19 N 3 o 4 , the trade name is Cialis, which is a prescription drug. Compared with the other two drugs for treating ED, sildenafil and vardenafil, tadalafil has a rapid onset of action and a long duration of action. It has been detected in food, aphrodisiac Chinese medicine preparations or health food for many times, and even The detection of its derivatives is self-evident to the harm of uninformed consumers, and also caused confusion in the market of traditional Chinese medicine preparations and health food. [0003] [0004] At present, there is no rapid test method for tadala...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N33/15G01N1/28
Inventor 高青张喆车宝泉周立春代红王志斌赵明方颍郭洪祝
Owner BEIJING INST FOR DRUG CONTROL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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