CNBr-activated Sepharose 4B is a pre-activated resin used for coupling antibodies or other large proteins containing -NH₂ groups to the Sepharose media, by the cyanogen bromide method, without an intermediate spacer arm.

• For immobilizing antibodies or other large proteins containing -NH₂ groups by coupling them to the matrix
• Over 25 years proven track record for coupling ligands containing primary amino groups
• Multipoint attachment resulting in a chemically stable product
• The coupling reaction by the cyanogen bromide method is spontaneous, rapid and easy to carry out