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-133699
    Pomalidomide-PEG4-COOH 2138440-81-8 ≥98.0%
    Pomalidomide-PEG4-COOH is a E3 ligase ligand-linker conjugate. Pomalidomide-PEG4-COOH contains the Pomalidomide based cereblon ligand and 4-unit PEG linker used in PROTAC technology (extracted from patent WO2017184995A1).
    Pomalidomide-PEG4-COOH
  • HY-130951
    Thalidomide-O-C6-COOH 2169266-69-5 99.29%
    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-131185
    Pomalidomide-amido-C3-COOH 2162120-77-4 99.51%
    Pomalidomide-amido-C3-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and a linker used in PROTAC technology.
    Pomalidomide-amido-C3-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-148142
    Pomalidomide-C3-NHS ester 2828476-87-3 98.70%
    Pomalidomide-C3-NHS ester is a synthesized E3 ligase ligand-linker conjugate, incorporating the Pomalidomide based cereblon ligand and NHS ester linker.
    Pomalidomide-C3-NHS ester
  • 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-130716
    Thalidomide-NH-C10-COOH 2428400-33-1
    Thalidomide-NH-C10-COOH (compound 6b) is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based CRBN ligand and a linker used in PROTAC technology.
    Thalidomide-NH-C10-COOH
  • HY-126457
    Thalidomide-propargyl 2098487-39-7 99.97%
    Thalidomide-propargyl is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-propargyl can be connected to the ligand for protein by a linker to form the IMiD containing PROTACs. Thalidomide-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-propargyl
  • HY-140844
    Thalidomide-O-PEG4-azide 2380318-57-8 98.02%
    Thalidomide-O-PEG4-azide is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and a linker used in PROTAC technology. Thalidomide-O-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-PEG4-azide
  • HY-138848A
    Thalidomide-4-O-C5-NH2 hydrochloride 2419145-66-5
    Thalidomide-4-O-C5-NH2 hydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and a linker used in PROTAC technology.
    Thalidomide-4-O-C5-NH2 hydrochloride
  • HY-130713
    Thalidomide-C2-amido-C2-COOH 2353496-84-9 98.45%
    Thalidomide-C2-amido-C2-COOH incorporates a CRBN ligand for the E3 ubiquitin ligase, and a linker. Thalidomide-C2-amido-C2-COOH can be used to design PROTAC CDK2/9 Degrader-1 (HY-130709).
    Thalidomide-C2-amido-C2-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-135045
    (S,R,S)-AHPC-C4-COOH 2172819-74-6
    (S,R,S)-AHPC-C4-COOH (VH032-C4-COOH) (linker 45) is a synthesized E3 ligase ligand-linker conjugate that incorporates the (S,R,S)-AHPC based VHL ligand and a linker used for EED-targeted PROTAC.
    (S,R,S)-AHPC-C4-COOH
  • HY-136184
    (S,R,S)-AHPC-phenol-C4-NH2 dihydrochloride 2376990-26-8 99.01%
    (S,R,S)-AHPC-phenol-C4-NH2 (VH032-phenol-C4-NH2) dihydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the (S,R,S)-AHPC based VHL ligand and a linker used in PROTAC technology.
    (S,R,S)-AHPC-phenol-C4-NH2 dihydrochloride
  • 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-114176B
    (S,R,S)-AHPC-C4-NH2 dihydrochloride 2341796-78-7
    (S,R,S)-AHPC-C4-NH2 dihydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the (S,R,S)-AHPC based VHL ligand and a linker used for EED-Targeted PROTAC.
    (S,R,S)-AHPC-C4-NH2 dihydrochloride
  • HY-136183
    (S,R,S)-AHPC-phenol-alkylC6-amine dihydrochloride 2376990-28-0 98.16%
    (S,R,S)-AHPC-phenol-alkylC6-amine dihydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the VH032 based VHL ligand and an alkyl linker used for PROTAC degrader.
    (S,R,S)-AHPC-phenol-alkylC6-amine dihydrochloride
  • HY-133138
    Pomalidomide-PEG1-azide 2133360-04-8
    Pomalidomide-PEG1-azide is a E3 ligase lgand-linker conjugate. Pomalidomide-PEG1-azide incorporates the Pomalidomide based cereblon ligand and a linker.?Pomalidomide-PEG1-azide?can be used to design a?PROTAC BRD4 Degrader-1 (HY-133131). Pomalidomide-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.
    Pomalidomide-PEG1-azide
  • HY-134982
    Thalidomide-piperazine-Boc 2222114-64-7 98.82%
    Thalidomide-piperazine-Boc is an intermediate that can be used in the synthesis of B-cell lymphoma 6 protein (BCL6) PROTAC.
    Thalidomide-piperazine-Boc
  • HY-130849
    (S,R,S)-AHPC-Me-C5-COOH 2229976-21-8
    (S,R,S)-AHPC-Me-C5-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the a VHL ligand and a linker. (S,R,S)-AHPC-Me-C5-COOH can be used in PROTAC DT2216 (HY-130604).
    (S,R,S)-AHPC-Me-C5-COOH
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