Esomeprazole sodium and method for detecting impurity content in esomeprazole sodium for injection

Abstract

The invention provides esomeprazole sodium and a method for detecting content of the esomeprazole sodium for injection. A chromatographic column, using octadecyl silane bonded silica gel or octo-alkyl silane bonded silica gel as a filling agent, implements the gradient elution with mixed solvent of an organic phase and a water phase as a mobile phase to measure the esomeprazole sodium and the content of eight impurities thereof. The method is simple in process and low in cost, and adopts the gradient elution method to measure the esomeprazole sodium and the content of eight important impurities thereof; the detection method is scientific, reasonable and objective, so that the quality of the esomeprazole sodium can be preferably controlled.

Description

technical field [0001] The invention belongs to the field of drug analysis, in particular to a method for detecting impurity content in proton pump inhibitor esomeprazole sodium and esomeprazole sodium for injection. Background technique [0002] Esomeprazole sodium (Esomeprazole Sodium, S-5-methoxy-2{[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]sulfinyl}-1H -benzimidazole sodium) is a powerful free radical scavenger and antioxidant, its molecular formula is C 17 h 12 N 3 NaO 3 S, molecular weight 367.4, structural formula: [0003] [0004] Esomeprazole sodium is the drug of choice for the treatment of acid-related diseases such as peptic ulcer and gastroesophageal reflux disease. As a single isomer of omeprazole, that is, (S)-isomer, it has higher bioavailability and more consistent pharmacokinetics, which increases the drug reaching the proton pump, and its acid suppression effect is better than that of Other proton pump inhibitors (PPIs). [0005] Esomeprazole sod...

AI Technical Summary

Problems solved by technology

However, because esomeprazole sodium is easy to introduce some process impurities in the production process, and it is easy to produce some degradation products in the process of freeze-drying and storage. Therefore, the content detection and impurity inspection methods in esomeprazole sodium and its injections are of great significance for controlling the quality of esomeprazole sodium and ensuring the clinical efficacy of esomeprazole sodium preparations

[0006] However, in the prior art, the quality control of esomeprazole sodium and esomeprazole sodium for injection usually adopts the method of detecting the content of esomeprazole sodium, and it is difficult to monitor its important impurities one by one. , it is difficult to evaluate the quality of esomeprazole, especially esomeprazole for injection

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