SULFO EMCS N-(epsilon-Maleimidocaproyloxy)sulfosuccinimide

Protein Crosslinker heterobifunctional

Catalog #CL221
CAS Number103848-61-9
Molecular FormulaC14H15N2O9SNa
Formula Weightf.w.: 410.3 daltons

Sulfo EMCS is a water soluble amine to sulfhydryl crosslinker that contains NHS ester and maleimide reactive groups at opposite ends of a medium length spacer arm (9.4 angstroms).

Product image

Pricing & Ordering

Quantity Price Action
50mgm + $284.00
100mgm + $536.00
Product Documents


Spacer arm 9.4 angstroms. Heterobifunctional crosslinker. Water soluble analog of EMCS. Used for enzyme immunoassay. Non-cleavable. Aliphatic spacer offers low potential for eliciting an immune response.

  1. Fujiwara, K., et al. (1988). J. Immunol. Methods 112, 77-83. 
  2. Peeters, J.M., et al. (1989). J. Immunol. Methods 120, 133-143. 
  3. Hermanson, G.T. (1996). Bioconjugate Techniques, San Diego: Academic Press,
  • Sulfonated analog of EMCS has improved solubility in aqueous buffer systems
  • Sulfo-NHS ester end couples with primary amines at pH 7-9 to form stable amide bonds
  • Maleimide reacts with -SH groups at pH 6.5-7.5, forming stable thioether linkages
  • Non-cleavable
  • Increased sphere of coupling vs. Sulfo-GMBS
  • Aliphatic spacer offers low potential for eliciting an immune response
  • Reactive groups: maleimide and Sulfo-NHS ester
  • Reactive toward: sulfhydryl and amino groups

EMCS

N-(epsilon-Maleimidocaproyloxy)succinimide

CAS 55750-63-5

GMBS

N-(gamma-Maleimidobutyryloxy)succinimide

CAS 80307-12-6

KMUH

N-(kappa-Maleimidoundecanoic acid) hydrazide

LC SMCC

Succinimidyl-4-(N-maleimidomethyl)-cyclohexane-1-carboxy(6-amidocaproate)

MBH

m-Maleimidobenzoic acid hydrazidehydrochloride

MBS

3-Maleimidobenzoyl-N-hydroxysuccinimide ester

CAS 58626-38-3