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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Determination of a new asiatic acid derivative, AS 2-006A in rat plasma and urine, and human plasma by high-performance liquid chromatography.

A high-performance liquid chromatographic method was developed for the determination of a new wound healing agent, AS 2-006A (ethoxymethyl 2-oxo-3, 23-O-isopropylideneasiatate), in rat plasma and urine, and human plasma. The sample preparation was simple: 2 volumes of acetonitrile were added to the biological samples to deproteinize it. A 50-microl aliquot of the supernatant was injected onto the reversed-phase column. The mobile phase employed was acetonitrile : H2O (9:1, v/v) and run at a flow rate of 1.1 ml/min. The column effluent was monitored by a UV detector set at 205 nm. The retention time for AS 2-006A was approximately 29.5 min. The detection limits for AS 2-006A in rat and human plasma were both 1 microg/ml, and in rat urine was 2 microg/ml. The coefficients of variation of the assay (within-day and between-day) were generally low (below 10.8%) for rat plasma and urine, and human plasma. No interferences from endogenous substances were found.[1]

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