2. Signaling Pathways
  3. PROTAC
  4. PROTAC Linkers

PROTAC Linkers

PROTAC Linkers

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PROTACs (Proteolysis Targeting Chimeric Molecules) are heterobifunctional protein degraders and promising targeted therapeutics candidates for cancer. The PROTAC linker connects two functional motifs of a PROTAC, a target protein binder and an E3 ligase recruiter.

The linker plays an important role in a PROTAC. The features of the linker (type, length, attachment position) can affect the formation of ligase:PROTAC:target ternary complex, resulting in influencing the efficient ubiquitination of the target protein and its ultimate degradation. The optimal lengths of the PROTAC linkers are reported varying from 12-carbon to over 20-carbon, and the commonly used linkers in the development of PROTACs are PEGs, Alkyl-Chain and Alkyl/ether.

PROTAC Linkers Isoform Specific Products:

PROTAC Linkers Isoform Comparison
Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-108374
    4-Azidobutylamine 88192-20-5 ≥98.0%
    4-Azidobutylamine is a PROTAC linker, which refers to the alkyl chain composition. 4-Azidobutylamine can be used in the synthesis of a series of PROTACs. PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins. 4-Azidobutylamine is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
    4-Azidobutylamine
  • HY-W008574A
    TGN-020 sodium 1313731-99-5 99.99%
    TGN-020 sodium is a selective Aquaporin 4 (AQP4) inhibitor with an IC50 of 3.1 μM. TGN-020 sodium is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs. TGN-020 sodium alleviates edema and inhibits glial scar formation after spinal cord compression injury in rats.
    TGN-020 sodium
  • HY-W007545
    NH2-PEG3 6338-55-2 ≥98.0%
    NH2-PEG3 (PROTAC Linker 35) is a PROTAC linker, which belongs to a polyethylene glycol (PEG) linker. NH2-PEG3 (PROTAC Linker 35) can be used in the synthesis of the PROTAC (β-NF-JQ1).
    NH2-PEG3
  • HY-138749
    Biotin alkyne 773888-45-2 98.03%
    Biotin alkyne is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Biotin alkyne is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Biotin alkyne
  • HY-W096119
    NH2-PEG2-C6-Cl 744203-60-9 ≥98.0%
    NH2-PEG2-C6-Cl is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    NH2-PEG2-C6-Cl
  • HY-W007803
    Boc-NH-C4-Br 164365-88-2 ≥98.0%
    Boc-NH-C4-Br is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.
    Boc-NH-C4-Br
  • HY-141128
    Ac4GalNAz 653600-56-7 99.71%
    Ac4GalNAz is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.
    Ac4GalNAz
  • HY-140922
    Biotin-PEG4-alkyne 1458576-00-5 98.88%
    Biotin-PEG4-alkyne is a biotin-labeled, PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Biotin-PEG4-alkyne is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Biotin-PEG4-alkyne
  • HY-126885
    DBCO-PEG5-NHS ester 2144395-59-3
    DBCO-PEG5-NHS ester is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. DBCO-PEG5-NHS ester is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). DBCO-PEG5-NHS ester is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
    DBCO-PEG5-NHS ester
  • HY-140910
    Biotin-PEG4-azide 1309649-57-7 99.75%
    Biotin-PEG4-azide is a biotin-labeled, PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Biotin-PEG4-azide is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
    Biotin-PEG4-azide
  • HY-140889
    Biotin-PEG4-NHS ester 459426-22-3 98.08%
    Biotin-PEG4-NHS ester is a biotin-labeled, PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Biotin-PEG4-NHS ester
  • HY-42776
    NH2-PEG3-C2-NH-Boc 101187-40-0 99.34%
    NH2-PEG3-C2-NH-Boc (PROTAC Linker 15) is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    NH2-PEG3-C2-NH-Boc
  • HY-W016735
    Azido-PEG3-alcohol 86520-52-7 98.17%
    Azido-PEG3-alcohol is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Azido-PEG3-alcohol is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
    Azido-PEG3-alcohol
  • HY-W005056
    Boc-NH-PEG2-CH2COOH 108466-89-3 99.87%
    Boc-NH-PEG2-CH2COOH is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    Boc-NH-PEG2-CH2COOH
  • HY-W008474
    Boc-NH-PEG2-C2-NH2 153086-78-3 99.01%
    Boc-NH-PEG2-C2-NH2 (PROTAC Linker 13) is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    Boc-NH-PEG2-C2-NH2
  • HY-140345A
    L-Homopropargylglycine hydrochloride 942518-19-6 ≥98.0%
    L-Homopropargylglycine hydrochloride is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs. L-homopropargylglycine hydrochloride is an amino acid analog of methionine containing an alkyne moiety that can undergo a classic click chemical reaction with azide containing Alexa Fluor.
    L-Homopropargylglycine hydrochloride
  • HY-140335
    Alkynyl myristic acid 82909-47-5
    Alkynyl myristic acid is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs. Alkynyl myristic acid is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Alkynyl myristic acid
  • HY-140213
    Azido-PEG2-C2-amine 166388-57-4
    Azido-PEG2-C2-amine (N3-PEG2-CH2CH2NH2) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Azido-PEG2-C2-amine is also a non-cleavable 2 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Azido-PEG2-C2-amine is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
    Azido-PEG2-C2-amine
  • HY-42149
    NH2-PEG2-C2-Boc 756525-95-8 ≥98.0%
    NH2-PEG2-C2-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. NH2-PEG2-C2-Boc is also a non-cleavable 2 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    NH2-PEG2-C2-Boc
  • HY-140212
    Azido-PEG1-amine 464190-91-8 ≥98.0%
    Azido-PEG1-amine is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Azido-PEG1-amine is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
    Azido-PEG1-amine
PROTAC Linkers Isoform Comparison

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