1. Signaling Pathways
  2. PROTAC
  3. PROTAC Linkers

PROTAC Linkers

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.

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-141171
    TCO-PEG24-NHS ester 2055646-26-7
    TCO-PEG24-NHS ester is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. TCO-PEG24-NHS ester is a click chemistry reagent, it contains a TCO group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing Tetrazine groups.
    TCO-PEG24-NHS ester
  • HY-133330
    Amino-PEG27-amine 2252208-09-4
    Amino-PEG27-amine is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Amino-PEG27-amine
  • HY-140095
    N-(Propargyl-PEG4-carbonyl)-N-bis(PEG1-methyl ester) 2112732-01-9
    N-(Propargyl-PEG4-carbonyl)-N-bis(PEG1-methyl ester) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. N-(Propargyl-PEG4-carbonyl)-N-bis(PEG1-methyl ester) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    N-(Propargyl-PEG4-carbonyl)-N-bis(PEG1-methyl ester)
  • HY-141071
    N-(m-PEG4)-N'-(DBCO-PEG4)-Cy5 2107273-76-5
    N-(m-PEG4)-N'-(DBCO-PEG4)-Cy5 is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. N-(m-PEG4)-N'-(DBCO-PEG4)-Cy5 is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
    N-(m-PEG4)-N'-(DBCO-PEG4)-Cy5
  • HY-140402
    Aminooxy-PEG4-C2-Boc 2100306-82-7
    Aminooxy-PEG4-C2-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Aminooxy-PEG4-C2-Boc
  • HY-140083
    Propargyl-PEG2-N-bis(PEG2) 2100306-62-3
    Propargyl-PEG2-N-bis(PEG2) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Propargyl-PEG2-N-bis(PEG2) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Propargyl-PEG2-N-bis(PEG2)
  • HY-140656B
    Biotin-PEG2000-Biotin
    Biotin-PEG2000-Biotin is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Biotin-PEG2000-Biotin
  • HY-138378
    Benzyl-PEG5-NHBoc 2064292-55-1
    Benzyl-PEG5-NHBoc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Benzyl-PEG5-NHBoc
  • HY-135943
    NH2-PEG8-C1-Boc
    NH2-PEG8-C1-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    NH2-PEG8-C1-Boc
  • HY-147206D
    Biotin-PEG5000-Alk
    Biotin-PEG5000-Alk is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Biotin-PEG5000-Alk 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-PEG5000-Alk
  • HY-130738
    Benzyl-PEG3-CH2-Boc 1443467-88-6
    Benzyl-PEG3-CH2-Boc is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    Benzyl-PEG3-CH2-Boc
  • HY-130172
    Benzyl-PEG2-CH2-Boc 1643957-26-9 98.0%
    Benzyl-PEG2-CH2-Boc is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    Benzyl-PEG2-CH2-Boc
  • HY-140137
    WSPC Biotin-PEG3-DBCO
    WSPC Biotin-PEG3-DBCO is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. WSPC Biotin-PEG3-DBCO is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
    WSPC Biotin-PEG3-DBCO
  • HY-138763
    Propargyl-PEG11-acid
    Propargyl-PEG11-acid is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Propargyl-PEG11-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.
    Propargyl-PEG11-acid
  • HY-138307
    NH2-PEG10000-Strt
    NH2-PEG10000-Strt is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    NH2-PEG10000-Strt
  • HY-141328
    Thiol-PEG4-Boc 564476-33-1
    Thiol-PEG4-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Thiol-PEG4-Boc
  • HY-140837
    Boc-NH-PEG5-azide 911209-07-9
    Boc-NH-PEG5-azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Boc-NH-PEG5-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.
    Boc-NH-PEG5-azide
  • HY-140542
    N-Benzyl-N-bis(PEG3-acid) 2093154-03-9
    N-Benzyl-N-bis(PEG3-acid) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    N-Benzyl-N-bis(PEG3-acid)
  • HY-141262
    Methyltetrazine-PEG24-amine 2353410-18-9
    Methyltetrazine-PEG24-amine is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Methyltetrazine-PEG24-amine
  • HY-140268
    DBCO-PEG8-acid 2765066-35-9
    DBCO-PEG8-acid is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. DBCO-PEG8-acid 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-PEG8-acid

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