| | Identification | Back Directory |  | [Name] 
 Tos-PEG2-CH2CO2tBu
 |  | [CAS] 
 1643957-24-7
 |  | [Synonyms] 
 Tos-PEG1-CH2-Boc
 Tos-PEG2-CH2CO2tBu
 tert-Butyl 2-[2-(tosyloxy)ethoxy]acetate
 Acetic acid, 2-[2-[[(4-methylphenyl)sulfonyl]oxy]ethoxy]-, 1,1-dimethylethyl ester
 |  | [Molecular Formula] 
 C15H22O6S
 |  | [MDL Number] 
 MFCD28122953
 |  | [MOL File] 
 1643957-24-7.mol
 |  | [Molecular Weight] 
 330.4
 | 
 | Chemical Properties | Back Directory |  | [Boiling point ] 
 449.0±30.0 °C(Predicted)
 |  | [density ] 
 1.183±0.06 g/cm3(Predicted)
 |  | [storage temp. ] 
 Store at Room Tem.
 |  | [Appearance] 
 colorless liquid
 | 
 | Hazard Information | Back Directory |  | [Description] 
 Tos-PEG2-CH2CO2tBu is a PEG linker containing a t-butyl ester and a tosyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The tosyl group is a very good leaving group for nucleophilic substitution reactions.
 |  | [Uses] 
 Tos-PEG1-CH2-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].
 |  | [IC 50] 
 PEGs; Alkyl/ether
 |  | [References] 
 [1] Snaebjornsson MT, et al. Non-canonical functions of enzymes facilitate cross-talk between cell metabolic and regulatory pathways. Exp Mol Med. 2018 Apr 16;50(4):34. DOI:10.1038/s12276-018-0065-6
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