| | Identification | Back Directory |  | [Name] 
 Bromo-PEG6-t-butyl ester
 |  | [CAS] 
 1393330-41-0
 |  | [Synonyms] 
 Br-PEG6-COOtBu
 Bromo-PEG6-Boc
 Br-PEG6-t-butyl
 CAS_1393330-41-0
 Br-PEG6-CH2CH2COOtBu
 Br-PEG6-t-butyl ester
 Bromo-PEG6-t-butyl ester
 Bromo-PEG7-t-butyl ester
 tert-butyl 1-bromo-3,6,9,12,15,18-hexaoxahenicosan-21-oate
 4,7,10,13,16,19-Hexaoxaheneicosanoic acid, 21-bromo-, 1,1-dimethylethyl ester
 |  | [Molecular Formula] 
 C19 H37 Br O8
 |  | [MDL Number] 
 MFCD22574809
 |  | [MOL File] 
 1393330-41-0.mol
 |  | [Molecular Weight] 
 473.4
 | 
 | Chemical Properties | Back Directory |  | [Boiling point ] 
 489.9±40.0 °C(Predicted)
 |  | [density ] 
 1.192±0.06 g/cm3(Predicted)
 |  | [form ] 
 Liquid
 |  | [color ] 
 Colorless to light yellow
 |  | [InChI] 
 InChI=1S/C19H37BrO8/c1-19(2,3)28-18(21)4-6-22-8-10-24-12-14-26-16-17-27-15-13-25-11-9-23-7-5-20/h4-17H2,1-3H3
 |  | [InChIKey] 
 MCRDORXGTMATBG-UHFFFAOYSA-N
 |  | [SMILES] 
 C(OC(C)(C)C)(=O)CCOCCOCCOCCOCCOCCOCCBr
 | 
 | Hazard Information | Back Directory |  | [Description] 
 Bromo-PEG6-t-butyl ester is a PEG linker containing a bromide group and a t-butyl protected carboxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The t-butyl protected carboxyl group can be deprotected under acidic conditions.
 |  | [Uses] 
 Bromo-PEG6-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].
 |  | [IC 50] 
 PEGs; Alkyl/ether
 |  | [References] 
 [1] An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562 DOI:10.1016/j.ebiom.2018.09.005
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