Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.


A Novel RP-HPLC Method for the Simultaneous Assessment of Olmesartan, Amlodipine and Hydrochlorothiazide and its Application to In-vitro Dissolution

Author(s): Ragaa El Sheikh, Abdelaziz M. Annadi, Ashraf A. Mohamed

The development and validation of a simple, rapid, precise and accurate RP-HPLC has been described for the simultaneous assessment and invitro dissolution of Olmesartan (OLM), Amlodipine (AML) and Hydrochlorothiazide (HCTZ) in their combined dosage forms. Separation was performed on Inertsil ODS-3 column (C18, 150 mm x 4.6 mm, 5 μm) using photodiode array (PDA) detection at 255 nm. The mobile phase consisted of phosphate buffer (pH 3.5) and acetonitrile, in a gradient program (time in minutes/acetonitrile %: 0.00/30, 1.00/30, 8.30/70 and 9.00/30) at a 1.3 ml min-1 flow rate. Analytes were perfectly resolved with retention times of 2.59, 4.99 and 7.48 min for OLM, AML, and HCTZ, respectively. Following the recommended procedure, linear calibration graphs extended for 0.20-28.00, 0.05-7.00 and 0.12-17.50 μg ml-1 with detection limits of 0.021, 0.002 and 0.012 μg m;-1 and quantitation limits of 0.063, 0.036 and 0.007 μg ml-1 for the assay and in-vitro drug release of OLM, AML and HCTZ, respectively. In-Vitro dissolution revealed that >96% of the labeled OLM, AML and HCTZ were released from their combined tablets within 20 min. The developed method was validated following the ICH guidelines regarding the system suitability, specificity, linearity, accuracy, precision, and robustness.

Full-Text PDF

SCImago Journal & Country Rank
Recommended Conferences
bornova escort karşıyaka escort osmangazi escort buca escort anne porno fetiş porno anal porno bartın escort burdur escort eskişehir escort escort izmir bursa escort porno escort bayan