alexa Validation of a solid phase extraction-high performance liquid chromatographic method for the determination of eprosartan in human plasma.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Ferreirs N, Iriarte G, Alonso RM, Jimnez RM, Ortz E

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Abstract In this work, a solid phase extraction-reversed phase high performance liquid chromatographic (SPE-RP-HPLC) method with photometric detection for monitoring the antihypertensive drug eprosartan has been validated in order to assure good quantitation of eprosartan in plasma samples obtained from patients under cardiovascular treatment. This analytical method was developed by using experimental design and quantitation was accomplished with the internal standard method. No interferences were observed from endogenous compounds of plasma and other drugs which are commonly co-administered in elderly patients. The recoveries of eprosartan from plasma samples, measured at three levels of the linear concentration range (150-4000 ng/mL) were found to be between 93.4 and 102.8\%. The intraday and interday precision and accuracy (measured by relative standard deviation, RSD, and relative error, RE, respectively) were always lower than 13\% (RSD) and 4\% (RE). Stability studies showed that eprosartan stock solutions are stable for at least 3 months when stored at 8 degrees C and plasma samples containing the drug were stable at least during the whole analytical method. This article was published in J Chromatogr A and referenced in Pharmaceutica Analytica Acta

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