The PROTAC molecule consists of a ligand, which binds an E3 ubiquitin ligase, connected by a linker to another ligand that binds the target protein. The association between a protein and an E3 ligase, as induced by a PROTAC molecule, will lead to the transfer of ubiquitin and degradation of the targeted protein.


Anti-infection >
Arenavirus Bacterial CMV Enterovirus Filovirus Fungal HBV HCV HIV HSV Influenza Virus Parasite Reverse Transcriptase RSV SARS-CoV
Antibody-drug Conjugate >
ADC Cytotoxin ADC Linker Drug-Linker Conjugates for ADC PROTAC-linker Conjugate for PAC
Apoptosis >
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JAK/STAT Signaling >
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Membrane Transporter/Ion Channel >
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Metabolic Enzyme/Protease >
15-PGDH 5 alpha Reductase 5-Lipoxygenase Acetyl-CoA Carboxylase Acyltransferase Adenosine Deaminase Adenosine Kinase Aldehyde Dehydrogenase (ALDH) Aldose Reductase Aminopeptidase Angiotensin-converting Enzyme (ACE) ATGL ATP Citrate Lyase Carbonic Anhydrase Carboxypeptidase Cathepsin CETP COMT Cytochrome P450 Dipeptidyl Peptidase Dopamine β-hydroxylase E1/E2/E3 Enzyme Elastase Enolase FAAH FABP Factor Xa Farnesyl Transferase Fatty Acid Synthase (FAS) FXR Glucokinase GSNOR Gutathione S-transferase HCV Protease Hexokinase HIF/HIF Prolyl-Hydroxylase HIV Integrase HIV Protease HMG-CoA Reductase (HMGCR) HSP Indoleamine 2,3-Dioxygenase (IDO) Isocitrate Dehydrogenase (IDH) Lactate Dehydrogenase LXR MAGL Mineralocorticoid Receptor Mitochondrial Metabolism MMP Nampt NEDD8-activating Enzyme Neprilysin PAI-1 PDHK PGC-1α Phosphatase Phosphodiesterase (PDE) Phospholipase Procollagen C Proteinase Proteasome Pyruvate Kinase RAR/RXR Renin ROR Ser/Thr Protease SGK Stearoyl-CoA Desaturase (SCD) Thrombin Tryptophan Hydroxylase Tyrosinase Xanthine Oxidase
Neuronal Signaling >
5-HT Receptor AChE Adenosine Kinase Amyloid-β Beta-secretase CaMK CGRP Receptor COMT Dopamine Receptor Dopamine Transporter FAAH GABA Receptor GlyT iGluR Imidazoline Receptor mAChR Melatonin Receptor Monoamine Oxidase nAChR Neurokinin Receptor Opioid Receptor Serotonin Transporter γ-secretase
NF-κB >
NF-κB IKK Keap1-Nrf2 MALT1
PI3K/Akt/mTOR >
Akt AMPK ATM/ATR DNA-PK GSK-3 MELK mTOR PDK-1 PI3K PI4K PIKfyve PTEN
PROTAC >
PROTAC E3 Ligase Ligand-Linker Conjugate Ligand for E3 Ligase PROTAC Linker PROTAC-linker Conjugate for PAC
Protein Tyrosine Kinase/RTK >
Ack1 ALK Bcr-Abl BMX Kinase Btk c-Fms c-Kit c-Met/HGFR Discoidin Domain Receptor DYRK EGFR Ephrin Receptor FAK FGFR FLT3 IGF-1R Insulin Receptor IRAK Itk PDGFR PKA Pyk2 ROS Src Syk TAM Receptor Trk Receptor VEGFR
Stem Cell/Wnt >
Casein Kinase ERK Gli GSK-3 Hedgehog Hippo (MST) JAK Notch Oct3/4 PKA Porcupine ROCK sFRP-1 Smo STAT TGF-beta/Smad Wnt YAP β-catenin γ-secretase
TGF-beta/Smad >
TGF-beta/Smad PKC ROCK TGF-β Receptor
Vitamin D Related >
VD/VDR
Others >
Androgen Receptor Aromatase Estrogen Receptor/ERR Progesterone Receptor Thyroid Hormone Receptor Others

2-chloro-4-[trans-3-amino-2,2,4,4-tetramethylcyclobutoxy]benzonitrile

AR antagonist 1 (compound 29) is a potent androgen receptor (AR) antagonist and binds to E3 ligase ligands with weak binding affinities to VHL protein in the synthesis of PROTAC ARD-266 (HY-133020).

  • CAS Number: 1818885-54-9
  • MF: C15H19ClN2O
  • MW: 278.78
  • Catalog: Ligand for E3 Ligase
  • Density: 1.18±0.1 g/cm3(Predicted)
  • Boiling Point: 394.9±42.0 °C(Predicted)
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-O-C8-Boc

Thalidomide-O-C8-Boc is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-O-C8-Boc can be connected to the ligand for protein by a linker to form PROTACs[1].

  • CAS Number: 2225148-52-5
  • MF: C26H34N2O7
  • MW: 486.56
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Lenalidomide-OH

Lenalidomide-OH is an analog of cereblon (CRBN) ligand Lenalidomide for E3 ubiquitin ligase, and is used in the recruitment of CRBN protein. Lenalidomide-OH can be connected to the ligand for protein by a linker to form PROTACs, such as the PROTAC BTK degrader SJF620 (HY-133137)[1].

  • CAS Number: 1416990-08-3
  • MF: C13H12N2O4
  • MW: 260.25
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VH032-CH2-Boc

VH032-CH2-Boc is a Boc-modified VH032 (HY-120217) that serves as a ligand for VHL and recruits von Hippel-Lindau (VHL) proteins. VH032-CH2-Boc will remove the protecting group under acidic conditions and be directly used in PROTAC molecule synthesis. VH032-CH2-Boc is a key intermediate in the synthesis of PROTAC based on VHL ligand.

  • CAS Number: 2827750-24-1
  • MF: C30H42N4O6S
  • MW: 586.74
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

2-(2,6-Dioxopiperidin-3-yl)-5-(prop-2-yn-1-yloxy)isoindoline-1,3-dione

Thalidomide-5-propargyl is a propargyl-modified Thalidomide (HY-14658), that acts as a Cereblon ligand to recruit CRBN proteins. Thalidomide-5-propargyl use alkynyl group at the end to be directly used in the synthesis of triazoles in the synthesis of PROTAC molecules, and is a key intermediate in the synthesis of PROTAC molecules based on CRBN design[1].

  • CAS Number: 2226303-74-6
  • MF: C16H12N2O5
  • MW: 312.28
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VH032-C2-NH-Boc

VH032-C2-NH-Boc is a Boc-modified VH032 (HY-120217) that acts as a ligand for VHL and recruits von Hippel-Lindau (VHL) proteins. VH032-C2-NH-Boc will remove the protecting group under acidic conditions, and can be directly used for the synthesis of PROTAC molecules. VH032-C2-NH-Boc is a key intermediate for the synthesis of PROTACs based on VHL ligands.

  • CAS Number: 2361119-87-9
  • MF: C31H45N5O6S
  • MW: 615.78
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

2-(2,6-dioxopiperidin-3-yl)-5-nitroisoindoline-1,3-dione

CRBN ligand-9 (Compound 4d) is a CRBN ligand (Ki: 8.9 μM). CRBN ligand-9 can be used for synthesis of PROTACs[1][2].

  • CAS Number: 55003-81-1
  • MF: C13H9N3O6
  • MW: 303.23
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VH 298

VH-298 is a highly potent inhibitor of the VHL:HIF-α interaction with a Kd value of 80 to 90 nM, used in PROTAC technology.

  • CAS Number: 2097381-85-4
  • MF: C27H33N5O4S
  • MW: 523.65
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-NH-C10-NH2 hydrochloride

Thalidomide-NH-C10-NH2 hydrochloride is the Thalidomide (HY-10984)-based cereblon ligand used in the recruitment of CRBN protein.Thalidomide-NH-C10-NH2 hydrochloride can be connected to the ligand for protein by a linker to form PROTACs[1].

  • CAS Number: 2460022-53-9
  • MF: C23H33ClN4O4
  • MW: 464.99
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VH032-C4-NH-Boc

VH032-C4-NH-Boc is a Boc-modified VH032 (HY-120217) that acts as a ligand for VHL to recruit von Hippel-Lindau (VHL) proteins. VH032-C4-NH-Boc will remove the protecting group under acidic conditions and be directly used in PROTAC molecule synthesis. VH032-C4-NH-Boc is a key intermediate in the synthesis of PROTAC based on VHL ligand.

  • CAS Number: 2412055-00-4
  • MF: C33H49N5O6S
  • MW: 643.84
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VH032-NH-CO-CH2-NHBoc

VH032-NH-CO-CH2-NHBoc is a Boc-modified VH032 (HY-120217) that acts as a ligand for VHL to recruit von Hippel-Lindau (VHL) proteins. VH032-NH-CO-CH2-NHBoc will remove the Boc protection under acidic conditions, and connect with the target protein ligand through a linker to form a PROTAC molecule, which is a key intermediate for the synthesis of PROTAC based on VHL ligand.

  • CAS Number: 2010986-19-1
  • MF: C29H41N5O6S
  • MW: 587.73
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

E3 ligase Ligand 15

E3 ligase Ligand 15 is a ligand for E3 ubiquitin ligase. E3 ligase Ligand 15 can be connected to the ligand for protein by a linker to form PROTACs or SNIPERs. PROTACs are inducers of ubiquitination-mediated degradation of cancer-promoting proteins[1].

  • CAS Number: 2306390-08-7
  • MF: C32H32Cl2N4O6
  • MW: 639.53
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PROTAC CRBN Degrader-1

PROTAC CRBN Degrader-1 comprises a cereblon (CRBN) ligand binding group, a linker and an von Hippel-Landau (VHL) binding group. PROTAC CRBN Degrader-1 is an cereblon (CRBN) degrader[1].

  • CAS Number: 2358775-70-7
  • MF: C53H72N8O13S
  • MW: 1061.25
  • Catalog: PROTAC
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

LCL 161, phenol

E3 ligase Ligand 12 is a ligand for E3 ubiquitin ligase. E3 ligase Ligand 12 can be connected to the ligand for protein by a linker to form PROTACs or SNIPERs. PROTACs are inducers of ubiquitination-mediated degradation of cancer-promoting proteins[1].

  • CAS Number: 2095244-42-9
  • MF: C31H42N4O6S
  • MW: 598.75
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-NH-(CH2)2-NH-Boc

Thalidomide-NH-(CH2)2-NH-Boc is a Boc-modified Thalidomide (HY-14658) that acts as a Cereblon ligand to recruit CRBN protein. The Boc protecting group at the end of Thalidomide-NH-(CH2)2-NH-Boc can be removed under acidic conditions to participate in the synthesis of PROTAC molecules. Thalidomide-NH-(CH2)2-NH-Boc is a key intermediate in the synthesis of CRBN-based PROTAC molecules.

  • CAS Number: 1957235-57-2
  • MF: C20H24N4O6
  • MW: 416.43
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-5-NH-PEG2-NH2 hydrochloride

Thalidomide-5-NH-PEG2-NH2 hydrochloride is a Thalidomide (HY-14658)-based cereblon ligand that recruits CRBN proteins. Thalidomide-5-NH-PEG2-NH2 hydrochloride can be connected to the target protein ligand through a linker to form a PROTAC molecule. For example, THAL-SNS-032 (HY-123937).

  • CAS Number: 2357110-58-6
  • MF: C19H25ClN4O6
  • MW: 440.88
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-5-NH2-CH2-COOH

Thalidomide-5-NH2-CH2-COOH (compound 114) is a potent and selective inhibitor of tropomyosin receptor kinase (trk). Thalidomide-5-NH2-CH2-COOH is a ligand of E3 ligase. Thalidomide-5-NH2-CH2-COOH has the potential for the treatment of one or more diseases (extracted from patent WO2021170109A1) [1].

  • CAS Number: 2412056-27-8
  • MF: C15H13N3O6
  • MW: 331.28
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

E3 ligase Ligand 22

E3 ligase Ligand 22 (compound 139) is a cereblon binder for the degradation of Ikaros or Aiolos by the ubiquitin proteasome pathway[1].

  • CAS Number: 2377849-57-3
  • MF: C28H34N6O4
  • MW: 518.61
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

E3 ligase Ligand 8

E3 ligase Ligand 8 is a ligand for E3 ubiquitin ligase. E3 ligase Ligand 8 can be connected to the ligand for protein by a linker to form PROTACs or SNIPERs. PROTACs are inducers of ubiquitination-mediated degradation of cancer-promoting proteins[1].

  • CAS Number: 1225383-33-4
  • MF: C31H34N2O6
  • MW: 530.61
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Pomalidomide-6-O-CH3

Pomalidomide-6-O-CH3 is the Pomalidomide-based cereblon (CRBN) ligand used in the recruitment of CRBN protein. Pomalidomide-6-O-CH3 can be connected to the ligand for protein by a linker to form PROTAC[1].

  • CAS Number: 1547163-08-5
  • MF: C14H13N3O5
  • MW: 303.27
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Pomalidomide-5-OH

Pomalidomide-5-OH (5-hydroxy pomalidomide) is the Pomalidomide-based cereblon (CRBN) ligand used in the recruitment of CRBN protein. Pomalidomide-5-OH can be connected to the ligand for protein by a linker to form PROTAC[1].

  • CAS Number: 1547162-41-3
  • MF: C13H11N3O5
  • MW: 289.24
  • Catalog: Ligand for E3 Ligase
  • Density: 1.7±0.1 g/cm3
  • Boiling Point: 633.0±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 336.6±31.5 °C

Thalidomide-5-O-C6-NH2 hydrochloride

Thalidomide-5-O-C6-NH2 hydrochloride is the Thalidomide (HY-10984)-based cereblon ligand used in the recruitment of CRBN protein.Thalidomide-5-O-C6-NH2 hydrochloride can be connected to the ligand for protein by a linker to form PROTACs[1].

  • CAS Number: 2761398-05-2
  • MF: C19H24ClN3O5
  • MW: 409.86
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide fluoride

E3 ligase Ligand 4 is a ligand of E3 ligase, used in PROTAC technology.

  • CAS Number: 835616-60-9
  • MF: C13H9FN2O4
  • MW: 276.22000
  • Catalog: Ligand for E3 Ligase
  • Density: 1.570±0.06 g/cm3(Predicted)
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-5-O-C3-NH2 hydrochloride

Thalidomide-5-O-C3-NH2 hydrochloride is the Thalidomide (HY-10984)-based cereblon ligand used in the recruitment of CRBN protein.Thalidomide-5-O-C3-NH2 hydrochloride can be connected to the ligand for protein by a linker to form PROTACs[1].

  • CAS Number: 2694727-94-9
  • MF: C16H18ClN3O5
  • MW: 367.78
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-NH-PEG3-CH2CHO

Thalidomide-NH-PEG3-CH2CHO is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-NH-PEG3-CH2CHO can be connected to the ligand for protein by a linker to form PROTAC BCL-XL degrader XZ739 (HY-133557)[1].

  • CAS Number: 2360530-43-2
  • MF: C21H25N3O8
  • MW: 447.44
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

β-Naphthoflavone-CH2-Br

β-Naphthoflavone-CH2-Br (β-NF-CH2-Br) is an arylhydrocarbon receptor (AhR) ligand. β-Naphthoflavone-CH2-Br can be used to synthesize the PROTAC β-NF-JQ1(HY-130256)[1].

  • CAS Number: 1282513-77-2
  • MF: C20H13BrO2
  • MW: 365.22
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

TC E3 5031

E3 ligase Ligand 3 is a ligand of E3 ligase, used in PROTAC technology.

  • CAS Number: 1061605-21-7
  • MF: C15H12N2O7
  • MW: 332.26
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

E3 Ligand-Linker Conjugate 4

E3 ligase Ligand 9 is a Ligand of BETd-260 for E3 Ligase used in PROTAC. BETd-260 is a potent BET degrader based on PROTAC technology, with an IC50 of 51 pM against BRD4 protein in RS4;11 leukemia cell line[1].

  • CAS Number: 2093388-45-3
  • MF: C18H23N3O3
  • MW: 329.39
  • Catalog: PROTAC
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-5,6-Cl

Thalidomide-5,6-Cl is the Thalidomide-based cereblon ligand used in the recruitment of CRBN protein. Thalidomide-5,6-Cl can be connected to the ligand for protein by a linker to form PROTACs.

  • CAS Number: 2648939-40-4
  • MF: C13H8Cl2N2O4
  • MW: 327.12
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thalidomide-4-C3-NH2 hydrochloride

Thalidomide-4-C3-NH2 hydrochloride is the Thalidomide-based cereblon ligand used in the recruitment of CRBN protein. Thalidomide-4-C3-NH2 hydrochloride can be connected to the ligand for protein by a linker to form PROTACs[1].

  • CAS Number: 2357110-84-8
  • MF: C16H18ClN3O4
  • MW: 351.78
  • Catalog: Ligand for E3 Ligase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A