1. Signaling Pathways
  2. PROTAC
  3. E3 Ligase Ligand-Linker Conjugates

E3 Ligase Ligand-Linker Conjugates

E3 Ligase Ligand-Linker Conjugate, which is one part of Proteolysis Targeting Chimeric Molecules (PROTACs), incorporates a ligand for the E3 ubiquitin ligase and a linker. After linked to the ligand for target protein (such as JQ1 for BRD4 protein, Molibresib for BET protein), those conjugates can be used for constituting PROTACs that targetprotein for ubiquitination and degradation. Currently, several PROTACs have been found to show good biological activity by specifically targeting BET, estrogen receptor (ER), androgen receptor, etc. MedChemExpress (MCE) offers a wide range of high quality E3 Ligase Ligand-Linker Conjugates including von Hippel-Lindau (VHL) ligands, MDM2 ligands, Cereblon (CRBN) ligands and cIAP1 ligands conjugating with different linkers (PEGs, Alkyl-Chain, Alkyl/ether, etc.). It’s convenient and time-saving for designing and synthesizinga wide variety of novel PROTACs (ARV-825, dBET1,MT-802, etc.), which can expand the application of PROTACs in the treatment of cancer, autoimmunity, inflammation and other diseases.

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-122725B
    Lenalidomide-C5-NH2 hydrochloride 2595367-27-2 98.44%
    Lenalidomide-C5-NH2 hydrochloride is the Lenalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Lenalidomide-C5-NH2 can be connected to the ligand for protein by a linker to form PROTACs, such as MDM2 PROTAC degrader.
    Lenalidomide-C5-NH2 hydrochloride
  • HY-128767
    VH032-PEG3-acetylene 2098799-80-3 98.14%
    VH032-PEG3-acetylene is a synthesized E3 ligase ligand-linker conjugate that incorporates the VH032 based VHL ligand and a linker used in PROTAC technology. VH032-PEG3-acetylene is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    VH032-PEG3-acetylene
  • HY-130798
    (S,R,S)-AHPC-amido-C5-acid 2162120-87-6 99.58%
    (S,R,S)-AHPC-amido-C5-acid incorporates a VHL ligand for the E3 ubiquitin ligase, and a PROTAC linker. (S,R,S)-AHPC-amido-C5-acid can be used to design XY028-133 (HY-129180).
    (S,R,S)-AHPC-amido-C5-acid
  • HY-141015
    Pomalidomide-PEG4-azide 2271036-47-4 99.85%
    Pomalidomide-PEG4-azide is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and a linker used in PROTAC technology. Pomalidomide-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.
    Pomalidomide-PEG4-azide
  • HY-132208
    Pomalidomide 4'-PEG2-azide 2271036-45-2 99.30%
    Pomalidomide 4'-PEG2-azide is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and a linker used in PROTAC technology. Pomalidomide 4'-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.
    Pomalidomide 4'-PEG2-azide
  • HY-131872
    Pomalidomide-PEG2-COOH 2140807-17-4 99.87%
    Pomalidomide-PEG2-COOH (Pomalidomide 4'-PEG2-acid) is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 2-unit PEG linker used in PROTAC technology.
    Pomalidomide-PEG2-COOH
  • HY-141011
    Thalidomide-O-amido-PEG4-azide 2411681-89-3 99.64%
    Thalidomide-O-amido-PEG4-azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Thalidomide-O-amido-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.
    Thalidomide-O-amido-PEG4-azide
  • HY-148896
    (S,R,S)-AHPC-C2-PEG3-BCN 2876198-36-4 ≥98.0%
    (S,R,S)-AHPC-C2-PEG3-BCN (Compound 16b) is a VHL ligand, and can be used for synthesis of PROTACs.
    (S,R,S)-AHPC-C2-PEG3-BCN
  • HY-130737
    Pomalidomide 4'-alkylC5-acid 2225940-49-6 98.78%
    Pomalidomide 4'-alkylC5-acid (Example 3) is an E3 ligase ligand-linker conjugate containing a Pomalidomide (HY-10984) based cereblon (CRBN) ligand and a linker. Pomalidomide 4'-alkylC5-acid can be used in the synthesis of PROTAC.
    Pomalidomide 4'-alkylC5-acid
  • HY-126458
    Thalidomide-O-PEG2-propargyl 2098487-52-4 98.26%
    Thalidomide-O-PEG2-propargyl (E3 ligase Ligand-Linker Conjugates 32) is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and 2-unit PEG linker used in PROTAC technology. Thalidomide-O-PEG2-propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Thalidomide-O-PEG2-propargyl
  • HY-135250B
    Thalidomide-4-O-C6-NH2 hydrochloride 2245697-88-3 98.53%
    Thalidomide-4-O-C6-NH2 hydrochloride is a synthesized E3 ligase ligand-linker conjugate used in the PROTAC dTAG-13, a degrader of FKBP12F36V and BET.
    Thalidomide-4-O-C6-NH2 hydrochloride
  • HY-137537
    Pomalidomide-PEG2-azide 2267306-14-7
    Pomalidomide-PEG2-azide is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 2-unit PEG linker used in PROTAC technology. Pomalidomide-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.
    Pomalidomide-PEG2-azide
  • HY-139345
    (S,R,S)-AHPC-CO-C9-acid 2172819-78-0
    (S,R,S)-AHPC-CO-C9-acid is an E3 ligase ligand-linker conjugate that can be connected to the ligand for protein to form PROTACs.
    (S,R,S)-AHPC-CO-C9-acid
  • HY-139218
    (S,R,S)-AHPC-Me-C6-NH2 2411422-49-4 99.14%
    (S,R,S)-AHPC-Me-C6-NH2 can be used for the synthesis of PROTAC. (S,R,S)-AHPC-Me-C6-NH2 (Compound SI-9) contains VHL ligand 2 (HY-112078).
    (S,R,S)-AHPC-Me-C6-NH2
  • HY-136269
    A 410099.1, amine-Boc hydrochloride 2374122-37-7
    A 410099.1, amine-Boc hydrochloride is a functionalized IAP ligand and can be used for the synthesis of PROTACs, such as PROTACs targeting BTK (PROTACs 4 and 5).
    A 410099.1, amine-Boc hydrochloride
  • HY-128846A
    Pomalidomide-C2-NH2 hydrochloride 2305369-00-8 99.46%
    Pomalidomide-C2-NH2 hydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and a linker used in PROTAC technology.
    Pomalidomide-C2-NH2 hydrochloride
  • HY-103605
    (S,R,S)-AHPC-C6-PEG3-C4-Cl 1835705-55-9
    (S,R,S)-AHPC-C6-PEG3-C4-Cl (VH032-C6-PEG3-C4-Cl) is a conjugate of ligands for E3 and 20-atom-length linker. The connector of linker is Halogen group. (S,R,S)-AHPC-C6-PEG3-C4-Cl incorporates the (S,R,S)-AHPC based VHL ligand and an alkyl/ether-based linker. (S,R,S)-AHPC-C6-PEG3-C4-Cl is capable of inducing the degradation of GFP-HaloTag7 in cell-based assays.
    (S,R,S)-AHPC-C6-PEG3-C4-Cl
  • HY-131647
    Pomalidomide 4'-PEG5-acid 2139348-63-1
    Pomalidomide 4'-PEG5-acid (Pomalidomide-PEG5-CO2H) is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 5-unit PEG linker used in PROTAC technology.
    Pomalidomide 4'-PEG5-acid
  • HY-130952
    Thalidomide-O-C8-COOH 2225148-51-4
    Thalidomide-O-C8-COOH is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-O-C8-COOH (Cereblon ligand 3) can be connected to the ligand for protein by a linker to form PROTACs.
    Thalidomide-O-C8-COOH
  • HY-137538
    Pomalidomide-PEG3-azide 2267306-15-8 98.88%
    Pomalidomide-PEG3-azide is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 3-unit PEG linker used in PROTAC technology. Pomalidomide-PEG3-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.
    Pomalidomide-PEG3-azide
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