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-131880
    Thalidomide-O-C2-acid 2369068-42-6
    Thalidomide-O-C2-acid is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and a linker used in PROTAC technology.
    Thalidomide-O-C2-acid
  • HY-21930
    Pomalidomide-PEG4-C-COOH 2097938-44-6 99.10%
    Pomalidomide-PEG4-C-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 4-unit PEG linker used in PROTAC technology.
    Pomalidomide-PEG4-C-COOH
  • HY-103612
    Thalidomide-O-amido-C3-COOH 2308035-51-8 98.43%
    Thalidomide-O-amido-C3-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and a linker used in PROTAC technology.
    Thalidomide-O-amido-C3-COOH
  • HY-148671
    (S,R,S)-AHPC-amido-C7-acid 2172819-76-8 98.28%
    (S,R,S)-AHPC-amido-C7-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 PROTACs.
    (S,R,S)-AHPC-amido-C7-acid
  • HY-129703B
    Thalidomide-PEG2-C2-NH2 hydrochloride 2245697-87-2 99.89%
    Thalidomide-PEG2-C2-NH2 hydrochloride 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-PEG2-C2-NH2 hydrochloride
  • HY-133799
    Pomalidomide-C7-COOH 2225940-51-0 98.07%
    Pomalidomide-C7-COOH is a synthesized E3 ligase cereblon ligand-linker conjugate. Pomalidomide-C7-COOH is an intermediate for the synthesis of PROTAC BCL-XL degraders.
    Pomalidomide-C7-COOH
  • HY-130652
    Pomalidomide 4'-PEG3-azide 2271036-46-3
    Pomalidomide 4'-PEG3-azide is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide-based cereblon ligand and a linker. Pomalidomide 4'-PEG3-azide can be used for the synthesis of iRucaparib-TP3 (Compound 3). iRucaparib-TP3 is a highly efficient PARP1?degrader based on Rucaparib by using the PROTAC approach. Pomalidomide 4'-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 4'-PEG3-azide
  • HY-143348
    NJH-2-030 2709040-02-6 98.74%
    NJH-2-030 can be used as a covalent recruiter for FEM1B in targeted protein degradation applications.
    NJH-2-030
  • HY-112599B
    Pomalidomide-PEG4-C2-NH2 hydrochloride 2357105-92-9
    Pomalidomide-PEG4-C2-NH2 hydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 4-unit PEG linker used in the synthesis of PROTACs..
    Pomalidomide-PEG4-C2-NH2 hydrochloride
  • HY-137531
    Pomalidomide-PEG1-C2-COOH 2139348-60-8 99.76%
    Pomalidomide-PEG1-C2-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 1-unit PEG linker used in PROTAC technology.
    Pomalidomide-PEG1-C2-COOH
  • HY-130951
    Thalidomide-O-C6-COOH 2169266-69-5 99.67%
    Thalidomide-O-C6-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and a linker used in PROTAC technology.
    Thalidomide-O-C6-COOH
  • HY-133139
    Lenalidomide-PEG1-azide 2185795-67-7
    Lenalidomide-PEG1-azide is a E3 ligase lgand-linker conjugate. Lenalidomide-PEG1-azide incorporates the Lenalidomide based cereblon ligand and a linker.?Lenalidomide-PEG1-azide?can be used to design a PROTAC BRD4 Degrader-2 (HY-133136). Lenalidomide-PEG1-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.
    Lenalidomide-PEG1-azide
  • HY-W580022
    Pomalidomide-5'-PEG8-C2-COOH 2138440-78-3 98.21%
    Pomalidomide-5'-PEG8-C2-COOH is an E3 Ligase Ligand-Linker Conjugates, consisting of Pomalidomide (HY-10984) and a linker. Pomalidomide-5'-PEG8-C2-COOH can be used for synthesis of PROTACs.
    Pomalidomide-5'-PEG8-C2-COOH
  • HY-103607
    (S,R,S)-AHPC-PEG2-C4-Cl 1835705-57-1 98.21%
    (S,R,S)-AHPC-PEG2-C4-Cl (VH032-PEG2-C4-Cl) is a conjugate of ligands for E3 and 13-atom-length linker. The connector of linker is Halogen group. (S,R,S)-AHPC-PEG2-C4-Cl incorporates the (S,R,S)-AHPC based VHL ligand and an alkyl/ether-based linker. (S,R,S)-AHPC-PEG2-C4-Cl is capable of inducing the degradation of GFP-HaloTag7 in cell-based assays.
    (S,R,S)-AHPC-PEG2-C4-Cl
  • HY-140942
    Biotin-PEG6-Thalidomide 2144775-48-2 98.51%
    Biotin-PEG6-Thalidomide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    Biotin-PEG6-Thalidomide
  • HY-128716A
    Pomalidomide-PEG3-C2-NH2 TFA 2414913-97-4 99.0%
    Pomalidomide-PEG3-C2-NH2 TFA (Cereblon Ligand-Linker Conjugates 5 (TFA)) is a synthetic E3 ligase ligand-linker conjugate comprising a Pomalidomide (HY-10984)-based cereblon ligand and a 3-unit PEG linker. Pomalidomide-PEG3-C2-NH2 TFA can be used for the synthesis of PROTACs.
    Pomalidomide-PEG3-C2-NH2 TFA
  • HY-130683
    Lenalidomide-propargyl-C2-NH2 hydrochloride 2489242-23-9 98.04%
    Lenalidomide-propargyl-C2-NH2 hydrochloride incorporates a cereblon (CRBN) ligand for the E3 ubiquitin ligase, and a linker. Lenalidomide-propargyl-C2-NH2 hydrochloride can be used to design the PROTAC MD-224 (HY-114312). Lenalidomide-propargyl-C2-NH2 (hydrochloride) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Lenalidomide-propargyl-C2-NH2 hydrochloride
  • HY-136163
    (S,R,S)-AHPC-C2-NH2 dihydrochloride 2341796-73-2 98.63%
    (S,R,S)-AHPC-C2-NH2 dihydrochloride incorporates a VHL ligand for the E3 ubiquitin ligase, and a PROTAC linker. (S,R,S)-AHPC-OH can be used in the synthesis of a series of PROTACs.
    (S,R,S)-AHPC-C2-NH2 dihydrochloride
  • HY-128832
    Nutlin-C1-amido-PEG4-C2-N3 99.19%
    Nutlin-C1-amido-PEG4-C2-N3 is a synthesized E3 ligase ligand-linker conjugate that incorporates the Nutlin 3 based MDM2 ligand and 4-unit PEG linker used in PROTAC technology. Nutlin-C1-amido-PEG4-C2-N3 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.
    Nutlin-C1-amido-PEG4-C2-N3
  • HY-133487B
    (S,R,S)-AHPC-C8-NH2 2341796-79-8
    (S,R,S)-AHPC-C8-NH2 (VH032-C8-NH2) is a synthesized E3 ligase ligand-linker conjugate that incorporates the VH032 based VHL ligand and a linker used for AKT PROTAC degrader. (S,R,S)-AHPC-C8-NH2 is XF038-164A, example 8, extracted from patent WO2019173516A1.
    (S,R,S)-AHPC-C8-NH2
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