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Hydroxy-PEG9-t-butyl ester - CAS 2055042-66-3

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Hydroxy-PEG9-t-butyl ester is a PEG linker containing a hydroxyl group and a t-butyl ester. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The t-butyl-protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

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Molecular Formula

C25H50O12

Molecular Weight

542.66

Hydroxy-PEG9-t-butyl ester

- Specification
  - Related CAS
    
    1186025-29-5 (polymer) 892154-71-1 (polymer)
    
    Purity
    
    ≥95%
    
    Solubility
    
    Soluble in DCM, DMF, DMSO, Water
    
    Appearance
    
    Pale Yellow Oily Matter
    
    Storage
    
    Store at 2-8°C
    
    Shipping
    
    Room temperature in continental US; may vary elsewhere.
    
    IUPAC Name
    
    tert-butyl 3-[2-[2-[2-[2-[2-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
    
    Synonyms
    
    HO-PEG9-CH2CH2COOtBu; Hydroxy-PEG9-(CH2)2-Boc; OH-PEG9-TBA; OH-PEG9-CH2CH2COOtBu; HO-PEG9-t-butyl ester; 2-Methyl-2-propanyl 1-hydroxy-3,6,9,12,15,18,21,24,27-nonaoxatriacontan-30-oate; 4,7,10,13,16,19,22,25,28-Nonaoxatriacontanoic acid, 30-hydroxy-, 1,1-dimethylethyl ester; 3,6,9,12,15,18,21,24,27-Nonaoxatriacontan-30-oic acid, 1-hydroxy-, 1,1-dimethylethyl ester; tert-butyl 1-hydroxy-3,6,9,12,15,18,21,24,27-nonaoxatriacontan-30-oate
- Properties
  - Boiling Point
    
    581.2±45.0°C at 760 mmHg
    
    Density
    
    1.1±0.1 g/cm3
    
    InChI Key
    
    TUSKJPQJBQMEPV-UHFFFAOYSA-N
    
    InChI
    
    InChI=1S/C25H50O12/c1-25(2,3)37-24(27)4-6-28-8-10-30-12-14-32-16-18-34-20-22-36-23-21-35-19-17-33-15-13-31-11-9-29-7-5-26/h26H,4-23H2,1-3H3
    
    Canonical SMILES
    
    CC(C)(C)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCO

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