cQrex® GY

cQrex® GY (Glycyl-L-tyrosine dihydrate) is a chemically defined and non-animal-derived peptide designed to overcome the solubility challenge associated with L-tyrosine in cell culture media.

Thanks to its high solubility, cQrex® GY enables the formulation of concentrated basal, feed and perfusion media at neutral pH, therefore intensifying and simplifying the bioprocess. 
By increasing the cell viability and cell-specific productivity, cQrex® GY also contributes to higher antibody titers and increased overall productivity of biological drugs.

In a fed-batch process, using cQrex® GY in combination with cQrex® KC supports the conversion from a dual-feed to a single-feed system.

Typical Applications

  • Efficient production of biopharmaceuticals

Benefits at a glance

  • Formulation of concentrated media
  • Improved cell proliferation and viability
  • Higher antibody titer and increased productivity
  • Conversion to a single-feed system with reduced process complexity

Markets & Applications