1240387-33-0
1240387-33-0 structure
- Name: Urea crosslinker – C₄-arm, NHS ester (DSBU, BuUrBU)
- Chemical Name: Urea crosslinker – C₄-arm, NHS ester (DSBU, BuUrBU)
- CAS Number: 1240387-33-0
- Molecular Formula: C17H22N4O9
- Molecular Weight: 426.38
- Create Date: 2023-03-11 17:51:17
- Modify Date: 2025-09-26 19:40:27
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Description 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.
| Name | Urea crosslinker – C₄-arm, NHS ester (DSBU, BuUrBU) |
|---|---|
| Synonyms | MFCD30738322 |
| Density | 1.47±0.1 g/cm3(Predicted) |
|---|---|
| Molecular Formula | C17H22N4O9 |
| Molecular Weight | 426.38 |
| Exact Mass | 426.138672 |
| LogP | -4.01 |
| Index of Refraction | 1.578 |