Use of Organic Solvents in Cylinder-Plate Assays

Use of organic solvents in cylinder-plate assays.

A new antibiotic, aterrimin (Lewis et al., 1953), is unstable in aqueous solution at pH 7, and insoluble at lower pH levels. Aterrimin can be dissolved in absolute alcohol and the solutions can be used satisfactorily in a cylinder-plate type of assay (Heatley, 1944). Further investigation has established that sevbral other organic solvents are nontoxic to various bacteria when used in cylinders...

Blanket Cylinder Impression Cylinder Printing Plate Cylinder Moistening Roller

Chemiluminescence Properties of Peroxyoxalate System in Organic Solvents

Peroxyoxalate system includes an oxalate ester, peroxide and a fluorescer, The energy resulted from the reaction of oxalate ester and peroxide is transferred to fluorescer and cause it to fluorsc. The effect of reactants chemical structure, their concentration, solvent media (polarity and viscosity) and the temperature, on the intensity of the illuminated light with respect to time have bee...

USE OF ORGANIC SOLVENTS FOR THE ENHANCEMENT AND LIFETIME INCREASING OF LUMINESCENCE IN FLUORIMETRIC APPLICATION BY FLUORESCAMINE

In this study, the fluorogenic efficiency of fluorescamine for spectrofluorimetric analysis of primary amines was investigated. Different mixtures of dichloromethane and other organic solvents were used for evaluation of fluorescence stability and intensity of fluorescamine derivative (Pyrrolinone). Solvents such as acetonitrile (ACN), tetrahydrofuran (THF) and dioxane increase stability an...

synthesis of 3-aryl-2h-benzo[b]-1,4-oxazines in [omim]bf4 and reduction of organic compounds in methylimidazolium formate

در این پروژه ترکیبات 3-آریل-2h-بنزو[b]-4،1-اکسازین ها از مواد اولیه تجاری مشتقات دو آمینو فنول و ?-هالو کتون های آروماتیک در مایع یونی 1-اکتیل-3-متیل ایمیدازولیوم تترا فلورو بورات([omim]bf4) سنتز شده است. این واکنش توسط باز پتاسیم کربنات محلول از طریق o-آلکیلاسیون و سپس یک واکنش آمیداسیون درون مولکولی خود بخود در مدت زمان کوتاه انجام می شود. ترکیبات 4،1-بنزوکسازین به این روش با بهره خوب تا آلی ...