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-W017772
    Boc-NH-PEG3 139115-92-7 ≥98.0%
    Boc-NH-PEG3 (PROTAC Linker 10) is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    Boc-NH-PEG3
  • HY-140922
    Biotin-PEG4-alkyne 1458576-00-5 99.09%
    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-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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Biotin-PEG4-azide
  • 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-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-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-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-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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    4-Azidobutylamine
  • 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-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-140889
    Biotin-PEG4-NHS ester 459426-22-3 99.56%
    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-W007713
    Fmoc-8-amino-3,6-dioxaoctanoic acid 166108-71-0 99.98%
    Fmoc-8-amino-3,6-dioxaoctanoic acid (Fmoc-NH-PEG2-CH2COOH) is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Fmoc-8-amino-3,6-dioxaoctanoic acid is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Fmoc-8-amino-3,6-dioxaoctanoic acid
  • HY-W004945
    3,6-Dioxaoctanedioic acid 23243-68-7 ≥98.0%
    36-Dioxaoctanedioic acid is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    3,6-Dioxaoctanedioic acid
  • HY-128834
    N3-PEG4-C2-NH2 951671-92-4 ≥98.0%
    N3-PEG4-C2-NH2 (PROTAC Linker 20) is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. N3-PEG4-C2-NH2 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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    N3-PEG4-C2-NH2
  • HY-130907
    Fmoc-N-PEG24-acid 2170484-59-8 99.91%
    Fmoc-N-PEG24-acid is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Fmoc-N-PEG24-acid
  • 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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG1-amine
  • HY-140921
    Biotin-PEG4-amino-t-Bu-DADPS-C6-azide 1260247-50-4
    Biotin-PEG4-amino-t-Bu-DADPS-C6-azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Biotin-PEG4-amino-t-Bu-DADPS-C6-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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Biotin-PEG4-amino-t-Bu-DADPS-C6-azide
  • 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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG3-alcohol
  • HY-W046471
    N-Boc-PEG4-bromide 1076199-21-7 ≥98.0%
    N-Boc-PEG4-bromide is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. N-Boc-PEG4-bromide is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    N-Boc-PEG4-bromide
  • HY-138461
    Azido-PEG1 1517-05-1 99.95%
    Azido-PEG1 is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Azido-PEG1 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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG1
PROTAC Linkers Isoform Comparison

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