Aminomethylbenzoic acid sample impurity detection device

A technology of aminotoluic acid and a detection device, which is applied in the field of aminotoluic acid sample impurity detection devices, can solve the problems of difficult adjustment and control of pH value, low reliability of detection results, limitations and inapplicability, etc., and achieve weighing accuracy Improvement, simple and compact structure, and low manufacturing cost

Active Publication Date: 2014-12-10
DEZHOU BOCHENG PHARMA
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  • Abstract
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Problems solved by technology

Check the operation process, adjust the pH value to 7.40 with 4.0% sodium hydroxide solution, the pH value is difficult to debug and control, and has obvious limitations and inapplicability
Since various reagents need to be prepared on the spot, all preparations are manual operations, and the weighing error is relatively large, resulting in low reliability of the final test results

Method used

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  • Aminomethylbenzoic acid sample impurity detection device
  • Aminomethylbenzoic acid sample impurity detection device
  • Aminomethylbenzoic acid sample impurity detection device

Examples

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Embodiment Construction

[0009] Aminotoluic acid sample impurity detection device, such as figure 1 As shown, it includes a liquid chromatograph 1, a weighing and feeding machine, a mixed quantitative infusion bottle and a single substance quantitative infusion bottle. Sodium lauryl sulfate weighs and dispenses machine 23, methylbenzoic acid weighs and dispenses machine 24 and p-chloromethylbenzoic acid weighs and dispenses machine 25 to form, and the mixed quantitative infusion bottle is mixed quantitative infusion bottle 31 by the first aminotoluic acid sample , mobile phase mixed quantitative infusion bottle 32, methyl benzoic acid mixed quantitative infusion bottle 33, p-chloromethylbenzoic acid mixed quantitative infusion bottle 34 and the second ammonium toluic acid sample mixed quantitative infusion bottle 35 are made up of, the simple substance quantitative infusion bottle is made of water Quantitative infusion bottle 41, methanol quantitative infusion bottle 42, triethylamine quantitative inf...

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Abstract

The invention discloses an aminomethylbenzoic acid sample impurity detection device which comprises a liquid chromatograph, a weighing feeding machine, a mixed quantitative conveying bottle and a simple substance quantitative conveying bottle, wherein the weighing feeding machine consists of an aminomethylbenzoic acid sample weighing feeding machine, a monosodium phosphate weighing feeding machine, a lauryl sodium sulfate weighing feeding machine, a methyl benzoic acid weighing feeding machine and a p-chloromethyl benzoic acid weighing feeding machine. The weighing is all performed in a quantitative manner, the weighing accuracy is improved, the errors are reduced, the measurement accuracy is improved, measurement errors caused by artificial factors are avoided, qualitative and quantitative analysis is achieved, and the repeatability is good.

Description

technical field [0001] The invention relates to a substance detection device, in particular to an aminotoluic acid sample impurity detection device. Background technique [0002] The detection of related substances in aminomethylbenzoic acid is an important task to check whether the drug is qualified. At present, the test method is to use an amino column, and the mobile phase is acetonitrile-water. The related substances of oxiracetam were tested by self-control method. Check the operation process, adjust the pH value to 7.40 with 4.0% sodium hydroxide solution, the pH value is difficult to debug and control, and has obvious limitations and inapplicability. Since various reagents need to be prepared on the spot, all preparations are manual operations, and the weighing error is relatively large, resulting in low reliability of the final test results. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned prior art, the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 刘连鹏张瑞琛岳艳辉赵磊
Owner DEZHOU BOCHENG PHARMA
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