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-130485
    Bromo-PEG2-C2-azide 530151-56-5 98.70%
    Bromo-PEG2-C2-azide is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Bromo-PEG2-C2-azide is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Bromo-PEG2-C2-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.
    Bromo-PEG2-C2-azide
  • 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-33366
    Boc-NH-PEG3-CH2COOH 462100-06-7
    Boc-NH-PEG3-CH2COOH is a PEG-based PROTAC linker can be used in the synthesis of PROTAC.
    Boc-NH-PEG3-CH2COOH
  • HY-30105
    N-Boc-piperazine 57260-71-6 99.97%
    N-Boc-piperazine is a Alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTAC PD-1/PD-L1 degrader-1 (HY-131183).
    N-Boc-piperazine
  • HY-140274
    DBCO-PEG12-NHS ester 2093934-94-0 ≥99.0%
    DBCO-PEG12-NHS ester is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. DBCO-PEG12-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-PEG12-NHS ester
  • HY-135804
    NH2-PEG3-C2-Boc 252881-74-6
    NH2-PEG3-C2-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    NH2-PEG3-C2-Boc
  • HY-141106
    m-PEG12-NHS ester 2207596-93-6 ≥98.0%
    m-PEG12-NHS ester is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    m-PEG12-NHS ester
  • HY-140341
    Sulfo-NHS-Acetate 152305-87-8 ≥98.0%
    Sulfo-NHS-Acetate is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.
    Sulfo-NHS-Acetate
  • HY-140755
    Aeide-C1-NHS ester 824426-32-6 ≥98.0%
    Aeide-C1-NHS ester is an alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTACs. Aeide-C1-NHS ester 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.
    Aeide-C1-NHS ester
  • HY-123916
    DBCO-Biotin 1418217-95-4 98.49%
    DBCO-Biotin is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs. DBCO-Biotin 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-Biotin
  • HY-140914
    Biotin-PEG4-Amide-C6-Azide 1006592-62-6 99.11%
    Biotin-PEG4-Amide-C6-Azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Biotin-PEG4-Amide-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-Amide-C6-Azide
  • HY-126957
    Biotin-PEG2-azide 1910803-72-3
    Biotin-PEG2-azide is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Biotin-PEG2-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-PEG2-azide
  • HY-W008296
    NH2-C6-NH-Boc 51857-17-1 99.61%
    NH2-C6-NH-Boc is a PROTAC linker which refers to the alkyl/ether composition. NH2-C6-NH-Boc can be used in the synthesis the Mcl-1 inhibitor based on PROTAC.
    NH2-C6-NH-Boc
  • HY-130549
    Acid-PEG3-C2-Boc 1807539-06-5
    Acid-PEG3-C2-Boc is a PEG- and Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs for the degradation of EGFR and inhibition of mTOR.
    Acid-PEG3-C2-Boc
  • HY-W045598
    Boc-C16-COOH 843666-40-0 99.98%
    Boc-C16-COOH is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Boc-C16-COOH is also a alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs
    Boc-C16-COOH
  • HY-42145
    3-Maleimidopropionic acid 7423-55-4 99.27%
    3-Maleimidopropionic acid is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.
    3-Maleimidopropionic acid
  • HY-130503
    N-Boc-PEG1-bromide 164332-88-1
    N-Boc-PEG1-bromide is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. N-Boc-PEG1-bromide is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    N-Boc-PEG1-bromide
  • HY-W007545
    NH2-PEG3 6338-55-2 99.07%
    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-W040246
    Fmoc-NH-PEG6-CH2CH2COOH 882847-34-9 99.29%
    Fmoc-NH-PEG6-CH2CH2COOH is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    Fmoc-NH-PEG6-CH2CH2COOH
  • HY-141119
    Boc-NH-PEG4-NHS ester 859230-20-9 99.07%
    Boc-NH-PEG4-NHS ester is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Boc-NH-PEG4-NHS ester
PROTAC Linkers Isoform Comparison

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