Determination of the Related Substances in Azithromycin Tablet by HPLC-Electrochemical Detector / 中国药房
China Pharmacy
;
(12)2007.
Article
in Chinese
| WPRIM
| ID: wpr-531082
ABSTRACT
OBJECTIVE:
To determine the content of the related substances in azithromycin tablet by HPLC-electrochemical detector.METHODS:
The column was Gamma ARP-1/P.The mobile phase consisted of 0.014 mol?L-1 dipotassium hydrogen phosphate/0.020 mol?L-1 sodium hydroxide(pH was adjusted to 11 by phosphoric acid and sodium hydroxide)-acetonitrile(71∶29) at a flow rate of 0.7 mL?min-1.The column temperature was 40 ℃.The injection volume was 50 ?L.Glass carbon working electrode was set at +900 mV.RESULTS:
The linear ranges of erythromycin peroxide,deoxyazithromycin,azithromycin impurity A,and N-demethlation azithromycin were 0.15~1.80 ?g(r=0.999),0.09~1.08 ?g(r=0.999),0.23~2.76 ?g(r=0.998) and 0.30~3.60 ?g(r=0.998),respectively.The average recoveries were 98.9%(RSD=1.1%),94.6%(RSD=5.4%),103.4%(RSD=3.4%) and 96.2%(RSD=4.3%),respectively.The contents of the related substances were all below 0.7%.CONCLUSION:
The established method is reproducible,sensitive and reliable,and applicable for the detection of the related substances in azithromycin tablets.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
China Pharmacy
Year:
2007
Type:
Article
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