Janus kinase (JAK) is a family of intracellular, nonreceptor tyrosine kinases that transduce cytokine-mediated signals via the JAK-STAT pathway. Since members of the type I and type II cytokine receptor families possess no catalytic kinase activity, they rely on the JAK family of tyrosine kinases to phosphorylate and activate downstream proteins involved in their signal transduction pathways. The receptors exist as paired polypeptides, thus exhibiting two intracellular signal-transducing domains. JAKs associate with a proline-rich region in each intracellular domain, which is adjacent to the cell membrane and called a box1/box2 region. After the receptor associates with its respective cytokine/ligand, it goes through a conformational change, bringing the two JAKs close enough to phosphorylate each other. The JAK autophosphorylation induces a conformational change within itself, enabling it to transduce the intracellular signal by further phosphorylating and activating transcription factors called STATs. The activated STATs dissociate from the receptor and form dimers before translocating to the cell nucleus, where they regulate transcription of selected genes.


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 >
Apoptosis Bcl-2 Family c-Myc Caspase DAPK Ferroptosis IAP MDM-2/p53 PKD RIP kinase Survivin Thymidylate Synthase TNF Receptor
Autophagy >
Autophagy LRRK2 ULK Mitophagy
Cell Cycle/DNA Damage >
Antifolate APC ATM/ATR Aurora Kinase Casein Kinase CDK Checkpoint Kinase (Chk) CRISPR/Cas9 Deubiquitinase DNA Alkylator/Crosslinker DNA-PK DNA/RNA Synthesis Eukaryotic Initiation Factor (eIF) G-quadruplex Haspin Kinase HDAC HSP IRE1 Kinesin LIM Kinase (LIMK) Microtubule/Tubulin Mps1 Nucleoside Antimetabolite/Analog p97 PAK PARP PERK Polo-like Kinase (PLK) PPAR RAD51 ROCK Sirtuin SRPK Telomerase TOPK Topoisomerase Wee1
Cytoskeleton >
Arp2/3 Complex Dynamin Gap Junction Protein Integrin Kinesin Microtubule/Tubulin Mps1 Myosin PAK
Epigenetics >
AMPK Aurora Kinase DNA Methyltransferase Epigenetic Reader Domain HDAC Histone Acetyltransferase Histone Demethylase Histone Methyltransferase JAK MicroRNA PARP PKC Sirtuin Protein Arginine Deiminase
GPCR/G Protein >
5-HT Receptor Adenosine Receptor Adenylate Cyclase Adiponectin Receptor Adrenergic Receptor Angiotensin Receptor Bombesin Receptor Bradykinin Receptor Cannabinoid Receptor CaSR CCR CGRP Receptor Cholecystokinin Receptor CRFR CXCR Dopamine Receptor EBI2/GPR183 Endothelin Receptor GHSR Glucagon Receptor Glucocorticoid Receptor GNRH Receptor GPCR19 GPR109A GPR119 GPR120 GPR139 GPR40 GPR55 GPR84 Guanylate Cyclase Histamine Receptor Imidazoline Receptor Leukotriene Receptor LPL Receptor mAChR MCHR1 (GPR24) Melatonin Receptor mGluR Motilin Receptor Neurokinin Receptor Neuropeptide Y Receptor Neurotensin Receptor Opioid Receptor Orexin Receptor (OX Receptor) Oxytocin Receptor P2Y Receptor Prostaglandin Receptor Protease-Activated Receptor (PAR) Ras RGS Protein Sigma Receptor Somatostatin Receptor TSH Receptor Urotensin Receptor Vasopressin Receptor Melanocortin Receptor
Immunology/Inflammation >
Aryl Hydrocarbon Receptor CCR Complement System COX CXCR FLAP Histamine Receptor IFNAR Interleukin Related IRAK MyD88 NO Synthase NOD-like Receptor (NLR) PD-1/PD-L1 PGE synthase Salt-inducible Kinase (SIK) SPHK STING Thrombopoietin Receptor Toll-like Receptor (TLR) Arginase
JAK/STAT Signaling >
EGFR JAK Pim STAT
MAPK/ERK Pathway >
ERK JNK KLF MAP3K MAP4K MAPKAPK2 (MK2) MEK Mixed Lineage Kinase MNK p38 MAPK Raf Ribosomal S6 Kinase (RSK)
Membrane Transporter/Ion Channel >
ATP Synthase BCRP Calcium Channel CFTR Chloride Channel CRAC Channel CRM1 EAAT2 GABA Receptor GlyT HCN Channel iGluR Monoamine Transporter Monocarboxylate Transporter Na+/Ca2+ Exchanger Na+/HCO3- Cotransporter Na+/K+ ATPase nAChR NKCC P-glycoprotein P2X Receptor Potassium Channel Proton Pump SGLT Sodium Channel TRP Channel URAT1
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

AT9283

AT9283 is a multitargeted kinase inhibitor which potently inhibits aurora kinase A/B, JAK2/3 (IC50=1.2 nM, 1.1 nM).

  • CAS Number: 896466-04-9
  • MF: C19H23N7O2
  • MW: 381.432
  • Catalog: Autophagy
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK3-IN-14

JAK3-IN-14 (compound 1) is a potent JAK3 inhibitor, with IC50 values of 38 and 600 nM for JAK3 and JAK2, respectively. JAK3-IN-14 shows inhibitory of IL-4 and IL-3 induced TF-1 cell proliferation, with IC50 values of 600 and 500 nM, respectively[1].

  • CAS Number: 454234-24-3
  • MF: C18H13N3O
  • MW: 287.32
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-IN-21

JAK-IN-21 (Example 4) is a selective and potent JAK inhibitor with IC50s of 1.73, 2.04, 109 and 62.9 nM against JAK1, JAK2, J2V617F and TYK2, respectively[1].

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

4,8-Dimethoxy-1-vinyl-9H-β-carboline

Dehydrocrenatidine, a natural alkaloid, is a specific JAK inhibitor. Dehydrocrenatidine inhibits voltage-gated sodium channels and ameliorates mechanic allodia in a rat model of neuropathic pain[1][2].

  • CAS Number: 65236-62-6
  • MF: C15H14N2O2
  • MW: 254.284
  • Catalog: Apoptosis
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 491.8±40.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 174.9±17.6 °C

Upadacitinib tartrate

Upadacitinib (ABT-494) tartrate tetrahydrate is a potent, orally active and selective Janus kinase 1 (JAK1) inhibitor (IC50=43 nM). Upadacitinib tartrate tetrahydrate displays approximately 74 fold selective for JAK1 over JAK2 (200 nM) in cellular assays dependent on specific, relevant cytokines. Upadacitinib tartrate tetrahydrate can be used for several autoimmune disorders research[1][2].

  • CAS Number: 1607431-21-9
  • MF: C21H33F3N6O11
  • MW: 602.516
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-2/3-IN-2

JAK-2/3-IN-2 (Compound 3h) is a JAK2 and JAK3 inhibitor with IC50s of 23.85 nM and 18.9 nM, respectively[1].

  • CAS Number: 2170398-48-6
  • MF: C19H19ClN2OS
  • MW: 358.88
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-IN-18

JAK-IN-18 is a potent inhibitor of JAK. JAK-IN-18 is useful for the research of multiple diseases, particularly ocular, skin, and respiratory diseases (extracted from patent WO2018204238A1, compound 1)[1].

  • CAS Number: 2247925-32-0
  • MF: C27H28F2N6O3
  • MW: 522.55
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

SJ988497

SJ988497 is a PROTAC JAK2 degrader. SJ988497 potently inhibits CRLF2-rearranged (CRLF2r) cell proliferation and degrades the CRBN neosubstrate GSPT1. SJ988497 consists of a Ruxolitinib (HY-50856) derivative, linker, and CRBN ligand Pomalidomide. SJ988497 can be used in the research of acute lymphoblastic leukemia (ALL)[1].

  • CAS Number: 2595365-41-4
  • MF: C36H36N10O5
  • MW: 688.74
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK3-IN-12

JAK3-IN-12 (compound 15k) is a highly potent JAK3 inhibitor with an IC50 value of 9.5 nM. JAK3-IN-12 can be used for researching rheumatoid arthritis[1].

  • CAS Number: 1430095-86-5
  • MF: C19H19N5O4S
  • MW: 413.45
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Itacnosertib

Itacnosertib (TP-0184) is both inhibitor to JAK2, ACVR1 (ALK2) and ALK5 as described in WO2014151871[1].

  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 675.4±65.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 362.2±34.3 °C

Tyk2-IN-4(BMS986165)

Tyk2-IN-4 is a selective, potent, allosteric inhibitor of tyrosine kinase 2 (Tyk2).

  • CAS Number: 1609392-27-9
  • MF: C20H19D3N8O3
  • MW: 425.46
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Rovadicitinib

Rovadicitinib is a Janus kinase (JAK) inhibitor with an IC50 value <20 nM. Rovadicitinib also exhibits anti-inflammatory activity[1][2].

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK3/BTK-IN-1

JAK3/BTK-IN-1 is a potent inhibitor of JAK3/BTK. BTK and JAK3 are two important targets for autoimmune diseases. Simultaneous inhibition of the BTK/JAK3 signalling pathway exhibits synergistic effects. JAK3/BTK-IN-1 has the potential for the research of JAK3 kinase and/or BTK-related diseases (extracted from patent WO2021147952A1, compound 002)[1].

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

BD750

BD750, an effective immunosuppressant and a JAK3/STAT5 inhibitor, inhibits IL-2-induced JAK3/STAT5-dependent T cell proliferation, with IC50 values of 1.5 μM and 1.1 μM in mouse and human T cells, respectively[1][2].

  • CAS Number: 892686-59-8
  • MF: C14H13N3OS
  • MW: 271.34
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-IN-24

JAK-IN-24 is a JAK inhibitor, with IC50s of 0.534 and 24 nM at the presence of 4 μM or 1mM ATP, respectively. JAK-IN-24 also inhibits PBMC IL-15 induced STAT5 phosphorylation with an IC50 of 86.171 nM[1].

  • CAS Number: 2042629-43-4
  • MF: C20H25N5O2
  • MW: 367.44
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-IN-30

JAK-IN-30 (compound 31) is a water-soluble JAK inhibitor with IC50 values of 2, 15, 18 and 2 nM for JAK2, JAK1, JAK3 and TYK2, respectively. JAK-IN-30 has research potential for dry eye disease (DED)[1].

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tubulin/JAK2-IN-1

Tubulin/JAK2-IN-1 (compound 7g) is a dual inhibitor of Janus kinase 2 (JAK2) and microtubule. Tubulin/JAK2-IN-1 has potent antiproliferative activity against the cancer cells[1].

  • CAS Number: 2933938-46-4
  • MF: C22H20N6O3
  • MW: 416.43
  • Catalog: Microtubule/Tubulin
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Peficitinib hydrochloride

Peficitinib (ASP015K) hydrochloride is an orally active JAK inhibitor, with IC50s of 3.9, 5.0, 0.7 and 4.8 nM for JAK1, JAK2, JAK3 and Tyk2, respectively[1].

  • CAS Number: 1353219-06-3
  • MF: C18H23ClN4O2
  • MW: 362.85
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Ruxolitinib (INCB018424)

Ruxolitinib is a potent and selective JAK1/2 inhibitor with IC50s of 3.3 nM and 2.8 nM in cell-free assays, and has 130-fold selectivity for JAK1/2 over JAK3.

  • CAS Number: 941678-49-5
  • MF: C17H18N6
  • MW: 306.365
  • Catalog: Autophagy
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 592.6±50.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 312.2±30.1 °C

TK4b

TK4b is a Janus kinase (JAK) inhibitor with the IC50 values of 19.40 nM and 18.42 nM for JAK2 and JAK3, respectively. TK4b can be used in lymphoid-derived diseases and leukemia cancer research[1].

  • CAS Number: 2232890-81-0
  • MF: C21H22N2O2
  • MW: 334.41
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Peficitinib hydrobromide

Peficitinib (ASP015K) hydrobromide is an orally active JAK inhibitor, with IC50s of 3.9, 5.0, 0.7 and 4.8 nM for JAK1, JAK2, JAK3 and Tyk2, respectively.

  • CAS Number: 1353219-05-2
  • MF: C18H23BrN4O2
  • MW: 407.30
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-STAT-IN-1

JAK-STAT-IN-1 (compound 1) is a selective JAK-STAT inhibitor. JAK-STAT-IN-1 can be used for the research of autoimmune disorder[1].

  • CAS Number: 1236666-76-4
  • MF: C21H21N5O2
  • MW: 375.42
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

HDAC/JAK/BRD4-IN-1

HDAC/JAK/BRD4-IN-1(compound 25ap) is a potent HDAC/JAK/BRD4 triple inhibitor. HDAC/JAK/BRD4-IN-1 inhibit cell growth and induces apoptosis in MDA-MB-231 cells, and shows anticancer activity in vivo[1].

  • CAS Number: 2755325-84-7
  • MF: C24H28N6O3
  • MW: 448.52
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK3/BTK-IN-2

JAK3/BTK-IN-2 is a potent inhibitor of JAK3/BTK. BTK and JAK3 are two important targets for autoimmune diseases. Simultaneous inhibition of the BTK/JAK3 signalling pathway exhibits synergistic effects. JAK3/BTK-IN-2 has the potential for the research of JAK3 kinase and/or BTK-related diseases (extracted from patent WO2021147952A1, compound 004)[1]

  • CAS Number: 2674036-93-0
  • MF: C25H32N8O2
  • MW: 476.57
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tyk2-IN-5

Tyk2-IN-5 (compound 6) is a highly potent, selective and orally active Tyk2 inhibitor and targets the JH2 domain, with a Ki of 0.086 nM for Tyk2 JH2 and an IC50 of 25 nM for IFNα. Highly effective in inhibiting IFNγ production in a rat pharmacodynamics model and fully efficacious in a rat adjuvant arthritis model[1].

  • CAS Number: 1797432-62-2
  • MF: C21H19FN8O2
  • MW: 434.43
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

AZ-3

AZ-3 is a potent and selective JAK1 inhibitor with an IC50 of 34 nM.

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

SB-1317

Zotiraciclib (TG02) is an orally active potent inhibitor of CDK2, JAK2 and FLT3 with IC50 values of 13, 73, and 56 nM, respectively. Zotiraciclib can be used for the research of advanced leukemias and multiple myeloma[1][2].

  • Density: 1.1±0.1 g/cm3
  • Boiling Point: 577.1±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 302.8±32.9 °C

Ifidancitinib

Ifidancitinib is a potent and selective inhibitor of JAK kinases 1/3. Ifidancitinib can be used in studies of allergies, asthma and autoimmune diseases[1].

  • CAS Number: 1236667-40-5
  • MF: C20H18FN5O3
  • MW: 395.39
  • Catalog: JAK
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: 1003.0±65.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 560.4±34.3 °C

PF-06700841 P-Tosylate

PF-06700841 P-Tosylate is a dual JAK1 and TYK2 inhibitor with IC50s of 17 and 23 nM, respectively. Anti-inflammatory activity[1].

  • CAS Number: 2140301-96-6
  • MF: C25H29F2N7O4S
  • MW: 561.60
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Fedratinib hydrochloride hydrate

Fedratinib hydrochloride hydrate (TG-101348 hydrochloride hydrate) is a potent, selective, ATP-competitive and orally active JAK2 inhibitor with IC50s of 3 nM for both JAK2 and JAK2V617F kinase. Fedratinib hydrochloride hydrate shows 35- and 334-fold selectivity over JAK1 and JAK3, respectively. Fedratinib hydrochloride hydrate induces cancer cell apoptosis and has the potential for myeloproliferative disorders research[1][2].

  • CAS Number: 1374744-69-0
  • MF: C27H40Cl2N6O4S
  • MW: 615.615
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A