Vector Laboratories is closed for the President’s Day on Monday, February 19th. We will be back in the office on Tuesday, February 20th.
We will respond to emails upon our return. Have a wonderful day.

Sulfo TCO-Maleimide (CCT-1355)



Sulfo TCO-Maleimide a water-soluble reagent that enables simple and efficient incorporation of TCO moiety onto cysteine-containing peptides or other thiol-containing molecules. The maleimide group specifically and efficiently reacts with reduced thiols (sulfhydryl groups, –SH) at pH 6.5 to 7.5 to form stable thioether bonds. The hydrophilic sulfonated spacer arm greatly improves water solubility of TCO derivatized molecules, in many cases making it completely soluble in aqueous media. A short spacer arm adds minimal mass to modified molecules


Unit Size10 mg, 25 mg, 100 mg
Molecular weight457.50
Chemical compositionC17H27N3O8S
SolubilityDMSO, DMF, Water
Purity>95% (HPLC)
AppearanceOff-white amorphous solid to semi-solid or oil
Storage Conditions-20°C. Desiccate
Shipping ConditionsAmbient temperature

Applicable patents and legal notices are available at legal notices.

How do I Request a Quote?

To request a quote for products:

  1.  Log in to
  2.  Add the items you wish to quote to the cart;
  3.  View your cart;
  4.  Click on the “Request a Quote” button found below the items in your cart;
  5.  Download your quote