The present review article presents and discusses automated sequential injection (SI) based methods for the determination of pharmaceutically and biologically important thiols, namely cysteine, N-acetylcysteine, penicillamine, glutathione and captopril. The review intends to cover a range of ten years of published research on this topic (2000 – 2009). The methods are classified according to the...

A simple, sensitive, rapid, accurate and precise spectrophotometric method has been developed for the estimation of Zolpidem tartrate in bulk and pharmaceutical dosage forms. Zolpidem tartrate shows maximum absorbance at 238.5 nm with molar absorptivity of 4.4648×10lit/mol/cm. Beer’s law was obeyed in the concentration range of 2-16 μg/ml. The limit of detection and limit of quantification were...

Two-component mixtures of cefsulodin and clavulanic acid were analysed by a first-derivative spectrophotometric method using a zero-crossing technique of measurement. The relative ease offered by this derivative technique for the quantification of these drugs, with closely overlapping spectral bands, was clearly demonstrated. As the absorption band of clavulanic acid closely overlaps with that ...

Inherited disturbances of the mitochondrial energy generating system represent a heterogeneous group of disorders associated with a broad spectrum of metabolic abnormalities and clinical symptoms. We used the polarographic and spectrophotometric method for detection of mitochondrial disorders, because these two techniques provide a different insight into mitochondrial function. In six patients ...

This paper describes the development and evaluation of a HPLC and UV spectrophotometric methods to quantify Cefaclor Monohydrate in Oral suspensions and Capsules. HPLC analysis were carried out using a C18 Knauer column and a mobile phase composed of Triethylamine: methanol: Acetonitrile: water (2: 10: 20: 68)v\v%, with a flow rate of 1.0 mL/min and UV detection at 265 nm. For the spectrophotom...

A simple high-performance liquid chromatography RP-HPLC and two reproducible ultraviolet spectrophotometric methods were developed and validated for the estimation of nebivolol HCl and valsartan simultaneously in combined pharmaceutical solid dosage form. The wavelength fixed for spectrophotometric measurement of valsartan at 246.6 nm, nebivolol HCl at 280.2 nm for the simultaneous equation and...

BACKGROUND Analysis of the pyruvate dehydrogenase complex (PDHc) activity in human skin fibroblasts is hampered by low enzyme activity in the cells. The most commonly used radiochemical method detects the formation of (14)CO(2), an endproduct of the E1 component of PDHc, from [1-(14)C]pyruvate. METHODS We report a spectrophotometric method for the analysis of PDHc activity in fibroblasts base...

Two UV-spectrophotometric and one reverse phase high performance liquid chromatography methods have been developed for the simultaneous estimation of amlodipine besilate, losartan potassium and hydrochlorothiazide in tablet dosage form. The first UV spectrophotometric method was a determination using the simultaneous equation method at 236.5, 254 and 271 nm over the concentration range 5-25, 10...

Titrimetric and spectrophotometric methods are described for the determination of oxcarbazepine (OXC) in bulk drug and in tablets. The methods use N-bromosuccinimide (NBS) and bromopyrogallol red (BPR) as reagents. In titrimetry (method A), an acidified solution of OXC is titrated directly with NBS using methyl orange as indicator. Spectrophotometry (method B) involves the addition of known exc...

INTRODUCTION Determining the presence or absence of red blood cells (RBC) or their breakdown products in cerebrospinal fluid (CSF) is essential for the evaluation of subarachnoid hemorrhage (SAH) in headache patients. Current methodology for finding blood in the CSF is either spectrophotometric detection of pigment, which is time consuming and labor intensive, or visual assesment of samples for...