Polyethylene Glycol (PEGs & PEOs)

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  1. Brij® C2 Polyoxyethylene (2) cetyl ether
    CAS: 9004-95-9 EC Number: 500-014-1 Formula: C16H33(OCH2CH2)nOH
    Solid average Mn ~330
    In Stock Item #: B129100
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    Technical Identifiers
    IUPAC Name
    2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-hexadecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoshow more
    SMILES
    CCCCCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
    InChIKey
    NLMKTBGFQGKQEV-UHFFFAOYSA-N
    InChI
    1S/C56H114O21/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-17-58-19-21-60-23-25-62-27-29-64-31-33-66-35-37-68-39-41-70-43-45-72-47-49-74-51-53-76-55-56-77-54-show more
    Synonyms
    Cetomacrogol 1000|9004-95-9|Brij-58|2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-hexadecoxyethoxy)ethox...
  2. Bis-PEG9-NHS ester
    CAS: 1008402-79-6 Formula: C30H48N2O17 Molecular Weight: 708.71
    Liquid ≥95%
    In Stock Item #: B165382
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    IUPAC Name
    (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]etshow more
    SMILES
    C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON2C(=O)CCC2=O
    InChIKey
    CQWLSZJYTZVHMU-UHFFFAOYSA-N
    InChI
    1S/C30H48N2O17/c33-25-1-2-26(34)31(25)48-29(37)5-7-39-9-11-41-13-15-43-17-19-45-21-23-47-24-22-46-20-18-44-16-14-42-12-10-40-8-6-30(38)49-32-27(35)3-4show more
    Synonyms
    Bis(NHS)PEG9 | Di(N-succinimidyl) 4,7,10,13,16,19,22,25,28-Nonaoxahentriacontanedioate | 4,7,10,13,16,19,22,25,28-Non...
  3. 2-[2-(2-Methoxyethoxy)ethoxy]-ethanethiol
    CAS: 31521-83-2 Formula: C7H16O3S Molecular Weight: 180.26
    Out of Stock Item #: M122050
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    Technical Identifiers
    IUPAC Name
    2-[2-(2-methoxyethoxy)ethoxy]ethanethiol
    SMILES
    COCCOCCOCCS
    InChIKey
    DMFFSDWRRLCKKN-UHFFFAOYSA-N
    InChI
    1S/C7H16O3S/c1-8-2-3-9-4-5-10-6-7-11/h11H,2-7H2,1H3
    Synonyms
    mPEG3-HS
  4. CBZ-9-amino-4,7-dioxanonanoic acid
    CAS: 462100-05-6 Formula: C16H23NO7 Molecular Weight: 341.36
    Out of Stock Item #: C122108
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    Technical Identifiers
    IUPAC Name
    2-[2-[2-[2-(phenylmethoxycarbonylamino)ethoxy]ethoxy]ethoxy]acetic acid
    SMILES
    C1=CC=C(C=C1)COC(=O)NCCOCCOCCOCC(=O)O
    InChIKey
    DMBZCDPECWJRJR-UHFFFAOYSA-N
    InChI
    1S/C16H23NO7/c18-15(19)13-23-11-10-22-9-8-21-7-6-17-16(20)24-12-14-4-2-1-3-5-14/h1-5H,6-13H2,(H,17,20)(H,18,19)
    Synonyms
    CBZ-AEEEA;CBZ-NH-PEG3-CH2COOH
  5. α,ω-Bis{2-[(3-carboxy-1-oxopropyl)amino]ethyl}polyethylene glycol
    CAS: 74558-41-1 Formula: HOOCCH2CH2CONH(CH2CH2O)nCH2CH2NHCOCH2CH2COOH
    Mr 10000
    In Stock Item #: B122306
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    Technical Identifiers
    IUPAC Name
    4-[2-[2-[2-(3-carboxypropanoylamino)ethoxy]ethoxy]ethylamino]-4-oxobutanoic acid
    SMILES
    C(CC(=O)O)C(=O)NCCOCCOCCNC(=O)CCC(=O)O
    InChIKey
    MRURVGLSCKHLSO-UHFFFAOYSA-N
    InChI
    1S/C14H24N2O8/c17-11(1-3-13(19)20)15-5-7-23-9-10-24-8-6-16-12(18)2-4-14(21)22/h1-10H2,(H,15,17)(H,16,18)(H,19,20)(H,21,22)
    Synonyms
    O,O′-Bis[2-(succinylamino)ethyl]polyethylene glycol
  6. α-MaleiMidopropionyl-ω-succiniMidyl-10(ethylene glycol)
    CAS: 1137109-22-8 Formula: C34H55N3O17 Molecular Weight: 777.81
    Out of Stock Item #: M122180
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    Technical Identifiers
    IUPAC Name
    (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[3-(2,5-dioxopyrrol-1-yl)propanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]etshow more
    SMILES
    C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCN2C(=O)C=CC2=O
    InChIKey
    DUKFGPQZJAPKMG-UHFFFAOYSA-N
    InChI
    1S/C34H55N3O17/c38-29(5-8-36-30(39)1-2-31(36)40)35-7-10-45-12-14-47-16-18-49-20-22-51-24-26-53-28-27-52-25-23-50-21-19-48-17-15-46-13-11-44-9-6-34(43)show more
    Synonyms
    2,5-Dioxopyrrolidin-1-yl1-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-oxo-7,10,13,16,19,22,25,28,31,34-decaoxa-4-azahept...
  7. O-(2-Azidoethyl)heptaethylene glycol
    CAS: 352439-36-2 EC Number: 635-360-3 Formula: C16H33N3O8 Molecular Weight: 395.45
    Liquid ≥95%
    In Stock Item #: A122207
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    Technical Identifiers
    IUPAC Name
    2-[2-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol
    SMILES
    C(COCCOCCOCCOCCOCCOCCOCCO)N=[N+]=[N-]
    InChIKey
    BUMODEBRFGPXRM-UHFFFAOYSA-N
    InChI
    1S/C16H33N3O8/c17-19-18-1-3-21-5-7-23-9-11-25-13-15-27-16-14-26-12-10-24-8-6-22-4-2-20/h20H,1-16H2
    Synonyms
    MFCD08274607 | 2-[2-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol | alpha-Hydroxy-o...
  8. HO-PEG₁₀-CH₂CH₂COOtBu
    CAS: 778596-26-2 Formula: C17H54O13 Molecular Weight: 586.71
    Out of Stock Item #: H122155
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    tert-butyl 3-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
    SMILES
    CC(C)(C)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
    InChIKey
    AEEGJXDZOJNBIY-UHFFFAOYSA-N
    InChI
    1S/C27H54O13/c1-27(2,3)40-26(29)4-6-30-8-10-32-12-14-34-16-18-36-20-22-38-24-25-39-23-21-37-19-17-35-15-13-33-11-9-31-7-5-28/h28H,4-25H2,1-3H3
    Synonyms
    tert-Butyl 1-hydroxy-3,6,9,12,15,18,21,24,27,30-decaoxatritriacontan-33-oate | Hydroxy-PEG10-Boc | OH-PEG10-TBA | Hyd...
  9. Poly(ethylene glycol) methyl ether(mPEG)
    CAS: 9004-74-4 EC Number: 618-394-3 Formula: CH3O(CH2CH2O)nH
    Solid average Mn 10,000
    In Stock Item #: M294743
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    Pricing & Pack Sizes
    Technical Identifiers
    Synonyms
    2-METHOXYETHANOL|109-86-4|Ethylene glycol monomethyl ether|Methyl cellosolve|Ethanol, 2-methoxy-|Methyl oxitol|2-Meth...
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Frequently Asked Questions

How do I choose Polyethylene Glycol (PEGs & PEOs) for my workflow?
Match reactivity, spacer length, photophysical properties, and conjugation chemistry to your target. Consider water solubility, cell permeability, and downstream detection method.
What specifications matter for Polyethylene Glycol (PEGs & PEOs)?
Functional group reactivity, purity (HPLC), spacer length, optical properties (excitation/emission for fluorophores), water solubility, and storage stability. Light sensitivity is critical for photoactivatable compounds.
Are bifunctional and bioorthogonal variants available?
Yes. Hetero-bifunctional linkers, click chemistry reagents (azide/alkyne), and bioorthogonal handles are available for two-step labeling and conjugation workflows.
How should light-sensitive compounds be handled?
Store light-sensitive products in amber containers, protected from ambient light. Many products are stable at -20°C in the dark. Use minimal light exposure during weighing and dilution.

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