Quality control method of compound platycodon grandiflorus ephedrine syrup (II)
A quality control method, ephedrine syrup technology, applied in measuring devices, chemical analysis by titration, instruments, etc., can solve the problems of cumbersome pretreatment methods, poor method specificity, and huge impact on clinical treatment, so as to ensure clinical use. Safety, guaranteed production process, stable and exact effect of curative effect
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[0051] Study on Quality Control Method of Compound Bellflower Ephedrine Syrup (II)
[0052] TLC identification of ephedrine hydrochloride
[0053] The proposed method is as follows: take 5ml of this product, add sodium hydroxide test solution to make it alkaline, add 15ml of diethyl ether to shake and extract for 10 minutes, separate the ether layer, evaporate the diethyl ether and concentrate to about 1ml as the test solution; take another hydrochloric acid For the ephedrine reference substance, use ethanol to make a solution containing 500 μg of ephedrine hydrochloride in every 1 ml as the reference substance solution; test according to thin-layer chromatography (Chinese Pharmacopoeia General Rules 0502), draw each 10 μl of the above-mentioned solution, and spot it on the same silica gel G thin film respectively. On the laminate, use the upper layer solution of n-butanol-acetic acid-water (4:1:5) as a developer, develop, dry in the air, spray with 0.2% ninhydrin in acetone sol...
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