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- W2392043319 abstract "OBJECTIVE: To establish a RP-HPLC method for determination of ephedrine hydrochloride and pseudoephedrine hydrochloride in Huanglongzhike granule. METHODS: The samples were separated on Agilent ZORBAX SB-C18column( 4. 6 mm × 250 mm,5μm) with mobile phase composed of CH3CN-KH2PO4solution( KH2PO4 6. 8 g dissolved in 1 000 ml of water followed by addition of 1 ml triethylamine,with pH adjusted to 3. 0 by phosphoric acid)( 4 ∶ 96). Ephedrine hydrochloride and Pseudoephedrine hydrochloride were detected at 210 nm. The column temperature was set at 35 ℃. RESULTS: The linear range was 0. 004 0-0. 048 0 μg( r = 0. 999 6) for ephedrine hydrochloride and 0. 023 7-0. 284 4 μg( r = 0. 999 9) for pseudoephedrine hydrochloride. The average recoveries of ephedrine hydrochloride and pseudoephedrine hydrochloride were 96. 2% and 97. 5%,respectively with RSD of1. 97% and 1. 81%,respectively. CONCLUSION: The method is simple and accurate and it can be used for determining the contents of ephedrine hydrochloride and pseudoephedrine hydrochloride in Huanglongzhike granule." @default.
- W2392043319 created "2016-06-24" @default.
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- W2392043319 date "2014-01-01" @default.
- W2392043319 modified "2023-09-23" @default.
- W2392043319 title "Determination of Ephedrine Hydrochloride and Pseudoephedrine Hydrochloride in Huanglongzhike Granule by RP-HPLC" @default.
- W2392043319 hasPublicationYear "2014" @default.
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