ISOLUTE® SCX-2 is a silica-based media with a chemically bonded propylsulfonic acid functional group. It is used for the isolation of a wide range of basic compounds using both catch & release and scavenging protocols. ISOLUTE SCX-2 is available packed into SPE cartridges for flow-through. Using the catch & release approach, basic target compounds can be isolated from a range of reaction mixtures. ISOLUTE SCX-2 cartridges can be used to remove excess basic reagents, allowing neutral or acidic compounds to pass straight through to the collection vessel.
During catch & release the media bed "catches” the compound of interest. Rinsing the cartridge with solvent removes impurities, leaving the compound of interest on the cartridge for subsequent elution by an appropriate solvent. Biotage has a range of cartridges depending on whether the product to be recovered is acidic, basic or neutral. Applications include: purification, solvent switch, concentrating & capturing and HPLC fractions.
It may also be possible to retain impurities in step 3, such that the cartridge becomes a one pass, one step purification system.