ABSTRACT
A Simple, sensitive and accurate high-performance liquid chromatographic [HPLC] method for effective and specific analysis of Loxoprofen [LXP] in the mobile phase and human plasma was developed. Effective chromatographic separation was attained on a Mediterranea Sea C18 column [250×4.6mm, 5um] with mobile phase containing acetonitrile and 0.01 M NaH2PO4 buffer [55: 45] by adjusting pH 6.5 with sodium dihydrogen phosphate buffer at a flow rate of 1ml/ min. Calibration ranges from 0.1ppm to 10 ppm with a coefficient of relation value [R2=0.999] by using a linear regression method and lower limit of quantification was 0.1ppm. The current method showed inter-day and intra-day accuracy and precision within the range of +/- 10%. % RSD was found to be less than 5 %. Analytical recovery was more than 90% which confirmed the reliability of current method. The proposed method was found appropriate for assessment of LXP in pharmacokinetic and bioequivalence study
ABSTRACT
In the present work a specific, accurate, precise, and reproducible UV-HPLC method was developed and validated for the analysis of Aceclofenac. This method involved elution of Aceclofenac in a mobile phase which is composed of buffer pH 6.8 [i.e. using 0.01N KH2PO4] and HPLC grade Acetonitrile [60:40]. Separation of the analyte was achieved using HPLC isocratic pump attached to the UV-VIS detectorC18, guard column and C18 column. The injection volume was 20 micro L, detected at 274 nm; flow rate: 1mL/min. Standard calibration curve was measured and found linear from 0.1 to 40 micro g/ml. The validation parameters were measured according to FDA guidelines and successful results were obtained. The presented analytical method could be employed for pharmacokinetic studies
ABSTRACT
A swift, precise and simple HPLC bioanalytical technique with UV detection was established and validated for quantitative estimation of valsartan in human plasma. The analyte was separated from plasma by protein precipitation with acetonitrile and chromatographically separated on Zorbax SB-C18 [5 micro m, 4.6mm x 15cm] column. The solvent mixture system consisting of acetonitrile, water and glacial acetic acid [40:59:1 v/v], was pumped using isocratic mode at 1mL/min flow rate. Samples' detection of drug was made spectrophotometrically at a wavelength of 264nm. The analyte response was instituted to be linear from 0.06 to 8 micro g/mL with a regression value of 0.999. The accuracy of the proposed method was ranged between 97.2-100.3% with 5% RSD. The analytical recovery [>95%] was consistently observed and satisfactory sample stability was also found at different environmental conditions. In conclusion the reported bio-analytical method is easy and robust that was successfully utilized in estimation of valsartan in a pharmacokinetic study