N-Hydroxysulfosuccinimide sodium salt

≥98% (HPLC)

Sulfo-NHS, Hydroxy-2,5-dioxopyrrolidine-3-sulfonicacid sodium salt
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
MDL number:
PubChem Substance ID:

Quality Level


≥98% (HPLC)


carbon, 21.57-22.68 (anhydrous)
nitrogen, 6.28-6.61 (anhydrous)

reaction suitability

reaction type: Addition Reactions


peptide synthesis: suitable


≤4% water

SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide


N-Hydroxysulfosuccinimide sodium salt is a water-soluble sulfonated analog of N-hydroxysuccinimide. It can undergo a coupling reaction with carboxylic acids in the presence of carbodiimides such as 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide(EDC) to form hydrophilic N-hydroxysulfosuccinimide active esters. These esters are useful in protein cross-linking experiments.


250 mg in glass bottle
1, 5 g in glass bottle
Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Sulfo-NHS is used for preparing hydrophilic active esters, e.g. for crosslinking agents

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
R Maydelid Trujillo-Nolasco et al.
Materials science & engineering. C, Materials for biological applications, 103, 109766-109766 (2019-07-28)
Radiosynovectomy is a technique used to decrease inflammation of the synovial tissue by intraarticular injection of a β-emitting radionuclide, such as 177Lu, which is suitable for radiotherapy due to its decay characteristics. Drug-encapsulating nanoparticles based on poly lactic‑co‑glycolic acid (PLGA)...
Karen S Cheung Tung Shing et al.
Scientific reports, 8(1), 12457-12457 (2018-08-22)
A direct interaction between the erythropoietin (EPOR) and the beta-common (βc) receptors to form an Innate Repair Receptor (IRR) is controversial. On one hand, studies have shown a functional link between EPOR and βc receptor in tissue protection while others...
P S Anjaneyulu et al.
International journal of peptide and protein research, 30(1), 117-124 (1987-07-01)
N-Hydroxysulfosuccinimide esters are reactive functional groups employed in a variety of protein modification reagents, especially cross-linking reagents. For these compounds, hydrolysis is the most important reaction competing for reaction of the esters with nucleophilic groups in proteins. We have employed...
N-hydroxysulfosuccinimide active esters: bis (N-hydroxysulfosuccinimide) esters of two dicarboxylic acids are hydrophilic, membrane-impermeant, protein cross-linkers.
Staros JV
Biochemistry, 21(17), 3950-3955 (1982)
Xiao-Yan Xu et al.
Journal of materials chemistry. B, 7(32), 4963-4972 (2019-08-15)
The construction of antibacterial and antitumor coatings could offer effective routes to improve the therapeutic effects of non-vascular stents for unresectable obstructions caused by malignant tumours. Herein, polyelectrolyte multilayers have been explored as bactericidal coatings with controlled antitumor drug release....
Collagen molecules play a critical role in tissue architecture and strength, and in cell-matrix interactions as insoluble ligands to regulate the diverse phenotypic activities of cells.
Read More

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.