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A method for the separation and detection of isomers in the racemate of Frelaner

A technology for fralana racemate and fralana racemate, which is applied in the field of separation and detection of isomers in fralana racemate, and achieves the effects of good separation effect and high sensitivity

Active Publication Date: 2022-04-26
TIANJIN ZHONGSHENG TIAOZHAN BIOTECH
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Problems solved by technology

At present, there is no report on the isomer determination method of Freylaner in the relevant literature, enterprise standards and pharmacopoeias. It is very necessary to establish a separation and detection method for the isomers in the racemate of Freylaner. Yes, for the subsequent development of the S isomer to market, and to establish a basis for checking the R isomer

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  • A method for the separation and detection of isomers in the racemate of Frelaner
  • A method for the separation and detection of isomers in the racemate of Frelaner
  • A method for the separation and detection of isomers in the racemate of Frelaner

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Embodiment Construction

[0025] Unless otherwise defined, the technical terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are conventional biochemical reagents; the experimental methods, unless otherwise specified, are conventional methods.

[0026] The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0027] 1. Instruments and reagents

[0028] Instruments and reagents Model and specification factory High performance liquid chromatography LC-20AT,SPD-20A,SIL-20A SHIMADZU Electronic balance ES 225SM-DR Precisa chiral column AD-H (4.6mm×250mm, 5μm) Daicel Frelaner racemate 99.21％ Medicin Biotechnology Co., Ltd. n-Hexane HPLC Tianjin Chuanpu Weiye Technology Co., Ltd. Isopropanol HPLC Xilong Sc...

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Abstract

The invention provides a method for separating and detecting isomers in the racemate of Frelaner, the method is carried out by high performance liquid chromatography, and amylose-tri(3,5-dimethylphenylamino Formate) bonded silica gel as the stationary phase, and n-hexane and ethanol as the mobile phase. The method of the invention can effectively separate and measure the isomers in the racemate of Freylana, and the method is efficient, simple, high in sensitivity, good in separation effect, and the separation degree reaches 6.681. A detection method is provided for the subsequent development and marketing of the S isomer of Frellaner and the inspection of the R isomer of Frellaner.

Description

technical field [0001] The invention belongs to the field of drug analysis, in particular to a method for separating and detecting isomers in a racemate of Frelaner. Background technique [0002] Fluralaner, English name: Fluralaner, CAS number 864731-61-3, molecular formula C 22 h 17 Cl 2 f 6 N 3 o 3 , molecular weight 556.9, white to light yellow solid. Structural formula see figure 1 . Frelaner belongs to the insecticides and acaricides of the isoxazoline class. For the prevention and treatment of ectoparasites in animals such as dogs and cats, the drug ingredients on the market are a mixture of R and S configurations, but further research results later showed that the S configuration is the main insecticidal active ingredient. At present, there is no report on the determination method of isomers of Freylaner in relevant literature, enterprise standards and pharmacopoeias. It is very necessary to establish a method for the separation and detection of isomers in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/74
CPCG01N30/02G01N30/74
Inventor 娄艳华程雪娇任连泉余贵菊崔志刚王建杨雪姜淋洁王猛张磊韩怡李丽琴孙珊珊
Owner TIANJIN ZHONGSHENG TIAOZHAN BIOTECH
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