ISOLUTE® HCX-Q

ISOLUTE® HCX-Q is a mixed-mode sorbent providing clean extracts for strongly basic compounds (e.g. quaternary amines) from complex biological fluid samples using a dual retention mechanism.

ISOLUTE® HCX-Q combines non-polar (C8) and weak cation exchange retention (COO-) mechanisms to isolate strongly basic analytes from complex aqueous matrices such as urine and plasma.

Analytes are initially retained by a non-polar retention mechanism, with inorganic salts, polar interferences such as phospholipids and large molecular weight peptides and proteins passing directly through the sorbent bed. The pH is then adjusted to allow an ion exchange retention mechanism to retain the analyte(s). Non-polar interferences are removed using an organic solvent or organic solvent/water wash. Analytes are then eluted in an extra clean fraction.

ISOLUTE HCX-Q is available in a wide range of SPE columns and 96-well plate formats.