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  (Nucleoside Chemistry)



Other Names:


General Information:


CAS Number: 128-08-5

Molecular Weight: 177.98 g/mol

Appearance: White solid

Melting Point: 175-180 C

N-Bromosuccinimide (NBS) is a reagent typically used in radical substitution and electrophilic addition reactions. In pure form it exists as a white solid but over time it will decompose to give off bromine which will give it a slight yellow/brown color.

Common Uses:

Reagent in SEAr (Electrophilic Aromatic Substitution) brominations

Reagent in brominations at benzylic positions

Reagent in Appel reactions


1) Patent Reference: WO2015144799, page 84, (18.8 MB)

2) Patent Reference: WO2012112946, page 165, (11.2 MB)

3) Patent Reference: WO2016014463, page 117, (6.7 MB)

4) Wikipedia: N-Bromosuccinimide (link)

5) N-Bromosuccinimide (link)