HPLC methods have been developed for the assay of bisacodyl in various pharmaceutical forms. The extraction procedures are simple and the HPLC conditions separate bisacodyl from its degradation products. The chromatography was performed using a Merck LiChrospher RP-select B column, a mobile phase of 55% acetonitrile/45% 0.05 M KH2PO4 and detection by UV at 214 nm.

The present review aims to investigate some of the recently reported analytical methods available for assay ofantihypertensive drugs in various combinations pharmaceutical forms. Several simultaneous RP- HPLC have beenreported determination antihypertensive drugs. familiarizes simultaneousdetermination Amlodipine besylate with other drug formulations which are used combination treatmentprotocols.

An rp-hplc method for the simultaneous determination of Ramipril (RP) and Amlodipine (AL) in tablets was developed and validated by Chinese Pharmacopoeia 2010. The linearity of the proposed method was investigated in the range of 0.01-0.25 mg/mL (r2=0.9998) for RP and 0.014-0.36 mg/mL (r2=0.9997) for AL. The limits of detection (LOD) were 0.06 μg/mL and 0.02 μg/mL for RP and AL, and the limits ...

This paper reports a RP-HPLC method for the determination of Lomustine (CCNU) in mouse tumor tissue. CCNU was separated and determined on a reverse-phase C18 5 microm column with a mobile phase of H2O-acetonitrile (54:46), detected at 254 nm and no internal standard. The calibration curve was linear (r = 0.9999) within the range of 0.98-15.68 microg/ml for CCNU. The recovery ratio of CCNU was 6...

Radioisotope-based and mass spectrometry coupled to chromatographic techniques are the conventional methods for monitoring HMG-CoA reductase (HMGR) activity. Irrespective of offering adequate sensitivity, these methods are often cumbersome and time-consuming, requiring the handling of radiolabeled chemicals or elaborate ad-hoc derivatizing procedures. We propose a rapid and versatile RP-HPLC me...

The present study describes the development of a validated RP-HPLC method for the determination of 5-fluorouracil in presence of its degradation products or other pharmaceutical excipients. Stress studies were performed on 5-fluorouracil and it was found that it degrades sufficiently in alkaline conditions, while negligible degradation was observed in acidic, neutral, oxidative and photolytic c...

easily degradating and various isomeric forms of rapamycin (sirolimus) face the determination of this compound to many challenges. in this study, we developed and validated the isocratic reversed phase high performance liquid chromatographic (rp-hplc) method for rapamycin. separation was performed on a c8 column (mz, 15 × 4.6 mm, 5 µm particle size) using methanol:water (80:20 v/v) as the mobil...

a method for determination of juglone in leaves and hulls of pterocarya fraxinifolia was developed, based on rp-hplc. this compound was extracted from leaves and hulls by chloroform refluxing about 2 hours. the chloroform was evaporated under low pressure at   50 ºc to produce a dry residue. the remained materials were dissolved in acetonitrile to be used for determination of this compound. app...

To establish an RP-HPLC method for the determination of β-sitosterol content in Fructus Bruceae extract; and to observe its inhibitory effect on gastric cancer metastasis. β-sitosterol content in Fructus Bruceae extract was determined by RP-HPLC. Inhibitory effects of low-, mediumand high-dose extracts on the adhesion of human gastric cancer SGC-7910 cells to Fibronectin (FN) were detected by M...

We present two new methods for purifying dinosterol (4a,23,24-trimethyl-5a-cholest-22E-en-3b-ol) from sediments for the purpose of hydrogen isotope analysis via gas chromatography–isotope ratio mass spectrometry (GC–IRMS). The first method uses reversed phase-high performance liquid chromatography (RP-HPLC) to purify dinosterol from structurally similar 4a-methyl sterols that co-elute on GC ana...