Simple sugars, oligosaccharides, polysaccharides, and their derivatives, including the methyl ethers with free or potentially free reducing groups, give an orangeyellow color w-hen treated with phenol and concentrated sulfuric acid. The reaction is sensitive and the color is stable. By use of this phenol-sulfuric acid reaction, a method has been developed to determine submicro amounts of sugars...

BACKGROUND & OBJECTIVES Age related macular degeneration (ARMD) is a leading cause of blindness, particularly in persons above 60 yr of age. Homocysteine is implicated in many ocular diseases including ARMD. This study was undertaken to assess the status and relationship between plasma homocysteine, homocysteine - thiolactone, homocysteinylated protein and copper levels in patients with ARMD. ...

A new and simple high-performance liquid chromatography (HPLC)-evaporative light scattering detection (ELSD) method for the determination of vertilmicin sulfate and its related substances is developed. The column is an Agilent SB-C(18) (250 x 4.6 mm, 5 microm). The mobile phase is 0.05 mol/L trifluoroacetic acid-methanol (85:15). Good separation of vertilmicin from the main related substances i...

Rupatadine fumarate is a potent dual antagonist of histamine and platelet-activating factor antagonist (PAF antagonist) and used to treat allergies. During the process development of rupatadine fumarate, five related substances were observed in Rupatadine fumarate and one new related compound was observed during the stress oxidative degradation study. These related substances were identified as...

this study was conducted to identify emission characteristics of certain hazardous substancescontained in the plastic of used home electrical and electronic appliances keeping in view compliance with therestriction of hazardous substances (rohs) directive and to estimate the possibility of safe recyclingpractices. according to the results, the concentration of cadmium, lead, mercury and chromiu...