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Key Documents

CF0041

Sigma-Aldrich

Urea crosslinker – C4-arm, NHS ester (DSBU, BuUrBU)

Synonym(s):

1,1′-Bis(2,5-dioxo-1-pyrrolidinyl) 4,4′-(carbonyldiimino)bis[butanoate], Disuccinimidyldibutyric urea

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About This Item

Linear Formula:
C17H22N4O9
CAS Number:
MDL number:
UNSPSC Code:
12161502
NACRES:
NA.22

form

solid

reaction suitability

reaction type: C-C Bond Formation
reagent type: cross-linking reagent

Application

The ureido-4,4´-dibutyric acid bis(hydroxysuccinimide) ester, also known as DSBU or BuUrBU, is the longest version of MS-cleavable urea-based lysine-lysine reactive homobifunctional cross-linkers, featuring a C4-arm. At neutral or slightly basic pH, it irreversibly crosslinks the neighbouring lysine groups. The presence of the symmetrical urea moiety which is prone to collision-induced dissociation allows for the unambiguous distinguishing of crosslinks in tandem CID-MS experiments.

Legal Information

Product of CF Plus Chemicals.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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