130672 Aldrich



Synonym: 1-Hydroxy-2,5-pyrrolidinedione, HOSu, NHS


Frequently Asked Questions

Live Chat and Frequently Asked Questions are available for this Product.


Additive used in the carbodiimide method for improved amidations1 and peptide couplings.2

Used to activate a carboxyl group for amide bond formation.


1 kg in poly bottle

5 g in glass bottle

25, 100, 250 g in poly bottle

5 kg in poly drum

Price and Availability

Development Quantities for Research

Developmental Quantities for ResearchSigma-Aldrich helps bridge the gap between Research and Process Chemistry. View the entire list of products available at process scale and competitive prices.

Suggested Laboratory Gloves

Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.

Technical Service:

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

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?