2-(2-Pyridyl)Ethyl Silica Gel, Pack Of 108

Details:

Specifications retention mechanism anion-exchangesample matrix compatibility organic or aqueous solutionsweak anion exchanger ideal for extracting strong basic compounds that remain charged at all ph levelsunlike conventional weak anion exchange spe phases such as -nh2 (aminopropyl) that have a pka of 9-10, a ph ≤ 7 is required to protonate or ionize the stationary phase to facilitate analyte retention. Elution is typically done by increasing the ph to 11 resulting in neutralization of the spe phase.2-(2-Pyridyl)-ethyl silica gel has a pka of ~6. Therefore, analyte elution is feasible at a ph ≥ 7. This characteristic is important for extracting analytes that are not stable (e.G. Hydrolyzes) at high phs typically required for elution when using traditional weak anion exchangers.Ideal for extracting acyl-coenzyme a esters from tissue.Composition: bed wt, 100 mgpackaging: pk of 108volume: 1 mlmatrix active group: wax phasemode of chromatography: ion exchange