cQrex® KC (N,N'-di-L-Lysyl-L-Cystine dihydrochloride) is a chemically defined cystine peptide designed to overcome the reactivity and solubility challenges associated with L-cysteine and its oxidized form L-cystine in cell culture media.
cQrex® KC is 1000 times more soluble than L-cystine at neutral pH. It enables the formulation of concentrated media at neutral pH, thus intensifying and simplifying the bioprocess.
Adding cQrex® KC to cell culture media leads to improved cell viability and increased antibody titer, thus resulting in a highly efficient production of therapeutic proteins.
For more information on our performance-boosting cQrex® ingredients, please follow the link below to our product website.
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