Deubiquitinases (DUBs) are a large group of proteases that cleave ubiquitin from proteins and other molecules. Ubiquitin is attached to proteins in order to regulate the degradation of proteins via the proteasome and lysosome; coordinate thecellular localisation of proteins; activate and inactivate proteins; and modulate protein-protein interactions. DUBs can reverse these effects by cleaving the peptide or isopeptide bond between ubiquitin and its substrate protein. In humans there are nearly 100 DUB genes, which can be classified into two main classes: cysteine proteases and metalloproteases. The cysteine proteases comprise ubiquitin-specific proteases (USPs), ubiquitin C-terminal hydrolases (UCHs), Machado-Josephin domain proteases (MJDs) and ovarian tumour proteases (OTU). The metalloprotease group contains only the Jab1/Mov34/Mpr1 Pad1 N-terminal+ (MPN+) (JAMM) domain proteases. DUBs play several roles in the ubiquitin pathway. One of the best characterised functions of DUBs is the removal of monoubiqutin and polyubiquitin chainsfrom proteins.


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LDN 91946

LDN 91946 is a selective, uncompetitive ubiquitin C-terminal hydrolase-L1 (UCH-L1) inhibitor with Ki of 2.8 uM, exhibits no activity against other cysteine hydrolase (UCH-L3, TGase 2, papain and caspase-3).

  • CAS Number: 439946-22-2
  • MF: C17H12N6O
  • MW: 314.316
  • Catalog: Deubiquitinase
  • Density: 1.6±0.1 g/cm3
  • Boiling Point: 714.0±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 385.6±32.9 °C

USP7-IN-3

USP7-IN-3 (Compound 5) is a potent and selective allosteric ubiquitin-specific protease 7 (USP7) inhibitor[1].

  • CAS Number: 2202738-42-7
  • MF: C29H31F3N6O3
  • MW: 568.59
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PR-619

PR-619 is a broad-range DUB inhibitor with EC50 of 3.93, 4.9, 6.86, 7.2, and 8.61 μM for USP4, USP8, USP7, USP2, and USP5, respectively.

  • CAS Number: 2645-32-1
  • MF: C7H5N5S2
  • MW: 223.278
  • Catalog: Deubiquitinase
  • Density: 1.6±0.1 g/cm3
  • Boiling Point: 406.0±45.0 °C at 760 mmHg
  • Melting Point: 210℃
  • Flash Point: 199.3±28.7 °C

FT206

FT206 is an inhibitor of carboxamides as ubiquitin-specific protrase extracted from patent WO 2020033707 A1, example 11-1[1].

  • CAS Number: 2278274-34-1
  • MF: C25H29N5OS
  • MW: 447.60
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

MF-094

MF-094 is a potent and selective USP30 inhibitor with an IC50 of 120 nM.

  • CAS Number: 2241025-68-1
  • MF: C30H37N3O4S
  • MW: 535.70
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

GRL 0617

GRL0617 is a potent, selective and competitive noncovalent inhibitor of severe acute respiratory syndrome (SARS-CoV) papain-like protease (PLpro)/deubiquitinase, with an IC50 of 0.6 μM, and with a Ki of 0.49 μM[1].

  • CAS Number: 1093070-16-6
  • MF: C20H20N2O
  • MW: 304.38600
  • Catalog: SARS-CoV
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP7-IN-6

USP7-IN-6 is a potent ubiquitin specific protease 7 (USP7) inhibitor, extracted from patent WO2017212010A1, example 25, has an IC50 of 6.8 nM[1].

  • CAS Number: 2166586-47-4
  • MF: C41H43N7O4S
  • MW: 729.89
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP7-IN-5

USP7-IN-5 is a potent ubiquitin specific protease 7 (USP7) inhibitor extracted from patent WO2017212012A1, example 40, has an IC50 of 49.9 nM[1].

  • CAS Number: 2166599-74-0
  • MF: C36H43N5O6
  • MW: 641.76
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

XL 188

XL 188 is a potent and selective USP7 inhibitor with IC50 values of 90 nM and 193 nM for USP7 full-length and catalytic domain enzyme, respectively. XL 188 can be used in research of cancer[1].

  • CAS Number: 2305045-76-3
  • MF: C32H42N6O4
  • MW: 574.71
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ML 323

ML-323 is a reversible, potent USP1-UAF1 inhibitor with IC50 of 76 nM in a Ub-Rho assay. The measured inhibition constants of ML-323 for the free enzyme (Ki) is 68 nM.

  • CAS Number: 1572414-83-5
  • MF: C23H24N6
  • MW: 384.477
  • Catalog: Deubiquitinase
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 515.4±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 265.5±32.9 °C

RA-9

RA-9 is a potent and selective proteasome-associated deubiquitinating enzymes (DUBs) inhibitor with favorable toxicity profile and anticancer activity. RA-9 blocks ubiquitin-dependent protein degradation without impacting 20S proteasome proteolytic activity. RA-9 selectively induces onset of apoptosis in ovarian cancer cell lines and primary cultures derived from donors. RA-9 induces endoplasmic reticulum (ER)-stress responses in ovarian cancer cells[1].

  • CAS Number: 919091-63-7
  • MF: C19H15N3O5
  • MW: 365.34000
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DC-U4106

DC-U4106 is a USP8 targeting inhibitor with the Kdvalue of 4.7 μM and the IC50 value of 1.2 μM. DC-U4106 can target the ubiquitin pathway and facilitate the degradation of Erα. DC-U4106 inhibits tumor growth with minimal toxicity and has the potential for the research of breast cancer[1].

  • CAS Number: 2410534-62-0
  • MF: C29H27N5O5
  • MW: 525.56
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DUBs-IN-2

DUBs-IN-2 is a potent deubiquitinase inhibitor with an IC50 of 0.28 μM for USP8.

  • CAS Number: 924296-19-5
  • MF: C15H9N5O
  • MW: 275.26500
  • Catalog: Deubiquitinase
  • Density: 1.36±0.1 g/cm3 (20 °C, 760 mmHg)
  • Boiling Point: 555.7±60.0 °C (760 mmHg)
  • Melting Point: N/A
  • Flash Point: N/A

DUBs-IN-3

DUBs-IN-3 is a potent deubiquitinase (USP) enzyme inhibitor extracted from reference compound 22c with an IC50 of 0.56 μM for USP8.

  • CAS Number: 924296-17-3
  • MF: C16H9N5O
  • MW: 287.27600
  • Catalog: Deubiquitinase
  • Density: 1.31g/cm3
  • Boiling Point: 560.4ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 292.7ºC

DUBs-IN-1

DUBs-IN-1 is an active inhibitor of ubiquitin-specific proteases (USPs), with an IC50 of 0.24 μM for USP8.

  • CAS Number: 924296-18-4
  • MF: C20H11N5O
  • MW: 337.33400
  • Catalog: Deubiquitinase
  • Density: 1.32g/cm3
  • Boiling Point: 632.2ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 336.2ºC

EOAI3402143

EOAI3402143 is a deubiquitinase (DUB) inhibitor, which inhibits dose-dependently inhibits Usp9x/Usp24 and Usp5.

  • CAS Number: 1699750-95-2
  • MF: C25H28Cl2N4O3
  • MW: 503.42
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

FT671

FT671 is a potent and selective USP7 inhibitor with an IC50 of 52 nM and binds to the USP7 catalytic domain with a Kd of 65 nM.

  • CAS Number: 1959551-26-8
  • MF: C24H23F4N7O3
  • MW: 533.48
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP1-IN-4

USP1-IN-4 (compound 10) is an effective USP1 inhibitor with an IC50 value of 2.44 nM. USP1-IN-4 has anticancer activity and synergistic activity with various anticancer drugs[1].

  • CAS Number: 2878441-72-4
  • MF: C26H23F3N6
  • MW: 476.50
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IU1-47

IU1-47 is a potent USP14 inhibitor with an IC50 of 0.6 μM. IU1-47 induces tau elimination in cultured neurons[1].

  • CAS Number: 670270-31-2
  • MF: C19H23ClN2O
  • MW: 330.85
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NSC 687852

b-AP15 is a specific inhibitor of the deubiquitinating enzymes UCHL5 and Usp14.

  • CAS Number: 1009817-63-3
  • MF: C22H17N3O6
  • MW: 419.387
  • Catalog: Deubiquitinase
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 670.4±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 359.3±31.5 °C

6RK73

6RK73 is a covalent irreversible and specific UCHL1 inhibitor with an IC50 of 0.23 µM. 6RK73 shows almost no inhibition of UCHL3 (IC50=236 µM). 6RK73 specifically inhibit UCHL1 activity in breast cancer[1].

  • CAS Number: 1895050-66-4
  • MF: C13H17N5O2S
  • MW: 307.37
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP7-IN-11

USP7-IN-11 is a potent ubiquitin-specific protease 7 (USP7) (Deubiquitinase) inhibitor with an IC50 of 0.37 nM. USP7-IN-11 has anticancer effects (WO2022048498A1; Example 187)[1].

  • CAS Number: 2763872-32-6
  • MF: C29H27ClN6O2S
  • MW: 559.08
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP30 inhibitor 11

USP30 inhibitor 11 is a selective and potent ubiquitin specific peptidase 30 (USP30) inhibitor with an IC50 of 0.01 µΜ, the example 83 extracted from patent WO2017009650A1. USP30 inhibitor 11 is used for the study of cancer and conditions involving mitochondrial dysfunction[1].

  • CAS Number: 2067332-64-1
  • MF: C17H16N6O2S
  • MW: 368.41
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP1-IN-2

USP1-IN-2 (Compound I-193) is a potent ubiquitin-specific protease 1 (USP1) inhibitor with an IC50 of less than about 50 nM[1].

  • CAS Number: 2098212-05-4
  • MF: C26H22F4N6O
  • MW: 510.49
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IU1-248

IU1-248, a derivative of IU1, is a potent and selective USP14 inhibitor with an IC50 of 0.83 μM.

  • CAS Number: 2307472-03-1
  • MF: C20H23N3O2
  • MW: 337.42
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP30 inhibitor 18

USP30 inhibitor 18 is a selective USP30 inhibitor with an IC50 of 0.02 μM. USP30 inhibitor 18 increases protein ubiquitination and accelerates mitophagy[1].

  • CAS Number: 2242582-40-5
  • MF: C26H28FN3O4S
  • MW: 497.58
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

USP7-IN-1

USP7-IN-1 is a selective and reversible inhibitor of ubiquitin-specific protease 7 (USP7), with an IC50 of 77 μM, and can be used for the research of cancer.

  • CAS Number: 1381291-36-6
  • MF: C23H24ClN3O3
  • MW: 425.90800
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DUB-IN-7

DUB-IN-7 (compound 43) is a Deubiquitinating enzymes (DUBs) inhibitor. DUB-IN-7 can be used in the study of diseases mediated by dysregulated JAK2 activity, such as leukemia[1].

  • CAS Number: 2894064-79-8
  • MF: C17H19N5O
  • MW: 309.37
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IMP-1710

IMP-1710 (IMP1710) is a potent, selective, covalent UCHL1 inhibitor with IC50 of 38 nM.IMP-1710 demonstrated exquisite selectivity in a cross-screening against 20 DUBs.IMP-1710 can profile activity of endogenous UCHL1 with excellent selectivity in cell types including endothelial cells (EA.hy926) and adenocarcinoma human alveolar basal epithelial cells (A549).IMP-1710 demonstrated >50% fibroblast–myofibroblast transition (FMT) inhibition (IC50=740 nM) in idiopathic pulmonary fibrosis (IPF), as well as αSMA inhibition.IMP-1710 is a powerful and selective probe to explore UCHL1 activity with potential application to substrate identification, mode of action studies, and cellular target profiling.

  • CAS Number: 2383117-96-0
  • MF: C23H19N5O
  • MW: 381.439
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NSC-632839

NSC632839 is a nonselective isopeptidase inhibitor, which inhibits USP2, USP7, and SENP2 with EC50s of 45±4 μM, 37±1 μM, and 9.8±1.8 μM, respectively.

  • CAS Number: 157654-67-6
  • MF: C21H22ClNO
  • MW: 339.858
  • Catalog: Deubiquitinase
  • Density: N/A
  • Boiling Point: 522.7ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 184ºC