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

JAK3/BTK-IN-6

JAK3/BTK-IN-6 (compound 14h) is a potent BTK and JAK3 dual inhibitor, with IC50 values of 0.6 and 0.4 nM, respectively. JAK3/BTK-IN-6 shows good metabolic stability in human liver microsome. JAK3/BTK-IN-6 can be used for hematological and immune diseases research[1].

  • CAS Number: 2243136-03-8
  • MF: C21H17BF3N5O3
  • MW: 455.20
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

SYK/JAK-IN-1

SYK/JAK-IN-1 is dual SYK/JAK inhibitor with IC50s of <5 nM for SYK and JAK2, respectively[1].

  • CAS Number: 2737326-28-0
  • MF: C24H26N8O3
  • MW: 474.52
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CEP-1347

CEP-1347 is an inhibitor of the JNK/SAPK pathway with neuroprotective effects.

  • CAS Number: 156177-65-0
  • MF: C33H33N3O5S2
  • MW: 615.76200
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Povorcitinib phosphate

Povorcitinib phosphate is a potent and selective inhibitor of JAK1. Povorcitinib phosphate has the potential for the research of disease selected from cutaneous lupus erythematosus (CLE) and Lichen planus (LP)[1].

  • CAS Number: 1637677-33-8
  • MF: C23H25F5N7O5P
  • MW: 605.45
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

GLPG0634

GLPG0634 is a selective JAK1 inhibitor with IC50 of 10 nM, 28 nM, 810 nM, and 116 nM for JAK1, JAK2, JAK3, and TYK2, respectively.

  • CAS Number: 1206161-97-8
  • MF: C21H23N5O3S
  • MW: 425.504
  • Catalog: JAK
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK1-IN-8

JAK1-IN-8, a potent JAK1 inhibitor (IC50<500 nM), compound 28, extracted from patent WO2016119700A1[1].

  • CAS Number: 1973485-18-5
  • MF: C22H23FN4O3S
  • MW: 442.51
  • Catalog: JAK
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK3 Inhibitor VI

JI6 is a potent, selective and orally active FLT3 inhibitor, with IC50s of ∼40, 8, and 4 nM for FLT3-WT, FLT3-D835Y, and FLT3-D835H, respectively. JI6 also inhibits JAK3 and c-Kit, with IC50s of ∼250 and ∼500 nM, respectively. JI6 can be used for the research of acute myeloid leukemia[1].

  • CAS Number: 856436-16-3
  • MF: C19H17N3O4S
  • MW: 383.42100
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

TC JL 37

TCJL37 is a potent, selective, and orally bioavailable TYK2 inhibitor with a Ki of 1.6 nM. TCJL37 can be used for the research of inflammatory bowel diseases (IBD)[1].

  • CAS Number: 1258294-34-6
  • MF: C17H11ClF2N4O2
  • MW: 376.74
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Pacritinib hydrochloride

Pacritinib hydrochloride is a potent inhibitor of both wild-type JAK2 (IC50=23 nM) and JAK2V617F mutant (IC50=19 nM). Pacritinib hydrochloride also inhibits FLT3 (IC50=22 nM) and its mutant FLT3D835Y (IC50=6 nM). Pacritinib hydrochloride can be used for the research of acute myeloid leukemia (AML) and myelofibrosis (MF)[1][2][3].

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

Deuruxolitinib

Deuruxolitinib (CTP-543), a deuterated Ruxolitinib, modulates the activity of JAK1/JAK2. Deuruxolitinib can be used for the research hair loss disorders (from patent WO2017192905A1, compound I)[1].

  • CAS Number: 1513883-39-0
  • MF: C17H10D8N6
  • MW: 314.41
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK3-IN-11

JAK3-IN-11 (Compound 12), a potent, noncytotoxic, irreversible, orally active JAK3 inhibitor with IC50 value of 1.7 nM, has excellent selectivity (>588-fold compared to other JAK isoforms), covalently bind to the ATP-binding pocket in JAK3. JAK3-IN-11 strongly inhibits JAK3-dependent signaling and T cell proliferation, is a promising tool for study autoimmune diseases[1].

  • CAS Number: 2412734-00-8
  • MF: C23H23N5O2
  • MW: 401.46
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

STAT3-IN-18

STAT3-IN-18 (compound SPP) is a platinum (IV) complex with an axial ligand derived from sandalwood. STAT3-IN-18 inhibits the JAK2-STAT3 pathway in breast cancer (BC) cells, with anti-proliferative activity. STAT3-IN-18 activates caspase-3 and increases cleaved polyADP-ribose polymerase to induce apoptosis. STAT3-IN-18 promotes maturation and antigen presentation of dendritic cells and demonstrates safety in vivo.

  • CAS Number: 2668267-41-0
  • MF: C18H24Cl2N2O6Pt
  • MW: 630.38
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Ilunocitinib

Ilunocitinib (compound 27) is a JAK inhibitor (extracted from patent WO2009114512A1)[1].

  • CAS Number: 1187594-14-4
  • MF: C17H17N7O2S
  • MW: 383.43
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CYT387

Momelotinib (CYT387) is an ATP-competitive inhibitor of JAK1/JAK2 with IC50a of 11 nM and 18 nM,respectively. CYT387 shows much less activity against JAK3.

  • CAS Number: 1056634-68-4
  • MF: C23H22N6O2
  • MW: 414.460
  • Catalog: Autophagy
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Jak-in-3

JAK-IN-3 (compound 22) is a potent JAK inhibitor, with IC50 values of 3 nM, 5 nM, 34 nM and 70 nM for JAK3, JAK1, TYK2 and JAK2, respectively[1].

  • CAS Number: 1400876-94-9
  • MF: C18H20N4O3
  • MW: 340.38
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK1-IN-7

JAK1-IN-7 is a Janus-associated kinase 1 (JAK1) inhibitor extracted from patent WO2018134213A1, Example 63, has an anti-inflammatory effect[1].

  • CAS Number: 2241039-81-4
  • MF: C28H31F2N7O4S
  • MW: 599.65
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

TYK2-IN-12

TYK2-IN-12 (compound 30) is an orally active, potent and selective TYK2 (tyrosine kinase 2) inhibitor, with a Ki of 0.51 nM. TYK2-IN-12 inhibits IL-12 induced IFNγ, with IC50 values of 2.7 and 7.0 μM in human and mouse whole blood, respectively. TYK2-IN-12 can be used for psoriasis research[1].

  • CAS Number: 2244061-66-1
  • MF: C24H20F2N4O2
  • MW: 434.44
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

GSK2646264

GSK2646264 (Compound 44) is a potent and selective spleen tyrosine kinase (SYK) inhibitor with a pIC50 of 7.1. GSK2646264 also inhibits other kinases with pIC50 values of 5.4, 5.4, 5.3, 5, 4.5, <4.6 and <4.3 against LCK, LRRK2, GSK3β, JAK2, VEGFR2, Aurora B and Aurora A, respectively. GSK2646264 is penetrable into the epidermis and dermis of the skin[1].

  • CAS Number: 1398695-47-0
  • MF: C24H26N2O2
  • MW: 374.48
  • Catalog: LRRK2
  • Density: 1.1±0.1 g/cm3
  • Boiling Point: 517.4±50.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 266.7±30.1 °C

TUL01101

TUL01101 is a potent, selective and orally active JAK1 inhibitor, with an IC50s of 3, 37, 1517 and 36 nM for JAK1, JAK2, JAK3, and TYK2, respectively. TUL01101 can be used for the research of rheumatoid arthritis[1].

  • CAS Number: 2411222-97-2
  • MF: C22H25F2N5O2
  • MW: 429.46
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Abrocitinib

Abrocitinib (PF-04965842) is a potent, oral active and selective JAK1 inhibitor, with IC50s of 29 and 803 nM for JAK1 and JAK2, respectively. Abrocitinib (PF-04965842) exhibits less active effect on TYK2 (IC50, 1.253 μM), and inhibits phosphorylation of STAT1,STAT3 and STAT5 after stimulation. Effective in autoimmune disease[1].

  • CAS Number: 1622902-68-4
  • MF: C14H21N5O2S
  • MW: 323.415
  • Catalog: JAK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JAK-IN-28

JAK-IN-28 (Compound 111) is a JAK inhibitor. JAK-IN-28 can be used for research of cancer or inflammatory diseases[1].

  • CAS Number: 2445500-22-9
  • MF: C20H18ClN7O
  • MW: 407.86
  • 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

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

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

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

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