Cy3 and Cy5 maleimide mono functional dyes are especially suitable for highly selective peptide, oligonucleotide and protein labeling via thiol maleimide coupling. 

Selectivity and irreversible linkage stabilize crosslinked proteins

  • Highly selective antibody labeling: reduces the probability of the label interfering with subsequent antibody-antigen reactions
  • Irreversible linkage: stabilizes crosslinked proteins
  • Provides an alternative when CyDye NHS esters are unsuitable: such as antibodies where amine labeling might impact antibody-antigen binding affinity


Read more
Something went wrong - we were not able to load your agreed MSA pricing. Please try refreshing the page.
Product Product Name Price
PA23031 Cy3 Maleimide Mono-Reactive Dye 5-Pack Cy3 5 vials each sufficient to label 1mg protein 790.00 USD Add to cart


PA25031 Cy5 Maleimide Mono-Reactive Dye 5-Pack Cy5 5 vials each sufficient to label 1mg protein 324.00 USD Add to cart


No reviews have been left for this product. Be the first to leave a review!

Leave a Review

You are not logged in.

To leave a review Register or Log In

Looking for support assistance?

Explore Product Support like Accessories, FAQs, Flow path schemes, Maintenance, Packing procedures, Spare parts, Troubleshooting and more.

If you can't find what you need, contact us to solve your problems.

Contact Us