Two novel simple, precise and rapid spectrophotometric methods (Mehod A and Mehod B) are proposed for the determination of sulfamethaxazole (SFZ) using ferric chloride and potassium ferricyaide, sodium nitrite and resorcinol, as reagents. Method A is based reduction of Fe+3 by SFZ and Fe+2 produced forms complex with potassium ferricyanide to form a green colored chromogen having maximum absorp...

Two simple, economic, sensitive and reproducible and rapid spectrophotometric & chromatographic methods have been developed and validated for the determination of Zaleplon (Zpl) in capsules and as bulk drug. The methods are based on the reduction of ferric chloride by Zpl in neutral medium and subsequent chelation of iron (II) with 1, 10phenanthroline (phen) (method A) or 2, 2 ́-bipyridyl (bipy)...

I N the chalcidoid wasp Mormoniella vitripennis (Walker) there has been formed by mutation a series of multiple allelic genes, each differing from wild type in one or more factors. The term “factor” is here used in an inclusive sense to denote anything which has an effect on development or which can in any other way be detected. The genes in this “R’ series are pleiotropic, unifactorial, bifact...

In the course of column partition-chromatographic analysis of ketonic-phenolic fractions obtained from ether extracts of enzymically hydrolysed pregnancy urine, Kober-chromogenic material slightly more 'polar' in its chromatographic behaviour than 16oc-hydroxyoestrone (17-oxooestra-1:3:5-triene-3:16oa-diol) was regularly detected. The two possibilities were at first considered that this materia...

The Svennerholm modification of the Elson-Morgan method for glucosamine analysis was evaluated for its applicability to the rapid determination of chitin in wood decay fungi. The evaluation included extent of chromogen interference, sensitivity, color stability, and hydrolysis conditions for maximum release of glucosamine from fungal cell walls. With our further modification, the Svennerholm me...

Two simple, precise and accurate spectrophotometric methods were developed for the estimation of Gefitinib in bulk drug and in pharmaceutical formulations. Method A and B is based on oxidation of followed by coupling of 3metyl-1,2-benzothiazolinone hydrazone (MBTH) with Gefitinib using Ferric chloride and Cerric ammonium nitrate(CAN) and measuring the chromogen at the λmax of 438 and 675 respec...

HEN ALCOHOLIC POTASSIUM HYDROXIDE and m-dinitrobenzene are used in the Zimmerman reaction (1) for the determination of 17ketosteroids (17-KS), a purple complex is formed which has a broad absorption band in the green portion of the visible spectrum. Application of this reaction to urine extracts also gives rise to other chromogens which are brown in color. On occasion, the ratio of brown chromo...

A simple, specific and reproducible serum iron method is described using the recently synthesized and highly sensitive chromogen, tripyridyl-S-triazine. The absorbance of this chromogen is compared to other iron reagents. Procedural modifications are given for using the Ramsay iron-binding capacity method with this serum iron procedure. The normal values found agree with most of those in the li...

introduction: intense pulsed light (ipl) has long been used for skin rejuvenation. photo rejuvenation with red light (with or without photo sensitizer) is a newer noninvasive way for this purpose; but, until now few comparative studies between these modalities have been performed . the aim of this study was to compare efficacy, adverse effects, and compliance of intense pulsed light rejuvenatio...

In this automated single-run enzymatic procedure for specific determination of triglycerides in serum, free glycerol is removed from the reaction mixture by pre-incubation with glycerol phosphate oxidase and peroxidase. The subsequent addition of lipase and the chromogen, 4-aminoantipyrine, results in the formation of color proportional to the amount of triglycerides in serum. Standards contain...