Bruton tyrosine kinase (Btk) is a member of the Tec family kinases with a well-characterized role in B-cell antigen receptor (BCR)-signaling and B-cell activation. Btk plays a crucial role in B cell development and activation through the BCR signaling pathway and represents a new target for diseases characterized by inappropriate B cell activity. Btk is a kinase expressed exclusively in B cells and myeloid cells and has a well characterized, vital role in B cells highlighted by the human primary immune deficiency disease, X-linked agammaglobulinemia (XLA), which results from mutation in the Btk gene. Btk plays an essential role in the BCR signaling pathway. Antigen binding to the BCR results in B cell receptor oligomerization, Syk and Lyn kinase activation, followed by Btk kinase activation. Once activated, Btk forms a signaling complex with proteins such as BLNK, Lyn, and Syk and phosphorylates phospholipase C (PLC)γ2. This leads to downstream release of intracellular Ca2+ stores and propagation of the BCR signaling pathway through extracellular signal-regulated kinase and NF-κB signaling, ultimately resulting in transcriptional changes to foster B cell survival, proliferation, and/or differentiation.


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

Zanubrutinib

Zanubrutinib is a selective Bruton tyrosine kinase (BTK) inhibitor.

  • CAS Number: 1691249-45-2
  • MF: C27H29N5O3
  • MW: 471.551
  • Catalog: Btk
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 713.4±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 385.2±32.9 °C

BTK-IN-10

BTK-IN-10 is a potent BTK inhibitor with IC50s of <5 nM for wild-type BTK or mutated BTK (C481S), respectively (WO2022012509A1; example 111)[1].

  • CAS Number: 2758596-07-3
  • MF: C25H24F2N4O2
  • MW: 450.48
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VA5

VA5 is a BTK kinaseinhibitor. VA5 has the potential to be used to study diseases associated with BTK kinase activity.

  • CAS Number: 2088001-24-3
  • MF: C31H34N4O8
  • MW: 590.624
  • Catalog: Btk
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 955.8±65.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 531.8±34.3 °C

AS-1763

AS-1763 is a potent, selective, noncovalent, and orally available inhibitor of Bruton’s tyrosine kinase (IC50 = 0.85 nM).

  • CAS Number: 2227211-00-7
  • MF: C33H31FN6O3
  • MW: 578.64
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

BGB-8035

BGB-8035 is an orally active, highly selective bruton's tyrosine kinase (BTK) inhibitor with IC50s of 1.1 nM, 99 nM, 621 nM for BTK, TEC, EGFR, respectively. BGB-8035 has antitumor and anti-arthritis activity. BGB-8035 has the potential for B-cell malignancies and autoimmune diseases research[1].

  • CAS Number: 2283349-24-4
  • MF: C24H31N5O4
  • MW: 453.53
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

(-)-Terreic acid

Terreic acid, a quinone epoxide antibiotic, acts as an effective Btk inhibitor. Terreic acid blocks the interaction between PKC and the pleckstrin homology domain of Btk. Terreic acid inhibits the binding of GST-BtkPH to PKC in lysates of HMC-1 human mast cells with an IC50 of approximately 100 μM[1].

  • CAS Number: 121-40-4
  • MF: C7H6O4
  • MW: 154.12000
  • Catalog: Btk
  • Density: 1.613 g/cm3
  • Boiling Point: 333.6ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: N/A

Ibrutinib (PCI-32765)

Ibrutinib (PCI-32765) is a selective, irreversible Btk inhibitor with an IC50 of 0.5 nM.

  • CAS Number: 936563-96-1
  • MF: C25H24N6O2
  • MW: 440.497
  • Catalog: Btk
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 715.0±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 386.2±32.9 °C

(±)-Zanubrutinib

(±)-Zanubrutinib is a potent, selective and orally available Bruton's tyrosine kinase (Btk) inhibitor.

  • CAS Number: 1633350-06-7
  • MF: C27H29N5O3
  • MW: 471.551
  • Catalog: Btk
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 713.4±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 385.2±32.9 °C

Evobrutinib

Evobrutinib is an inhibitor of Bruton's tyrosin kinase (Btk) inhibitor extracted from patent US20140162983 example 0174.

  • CAS Number: 1415823-73-2
  • MF: C25H27N5O2
  • MW: 429.514
  • Catalog: Btk
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 683.4±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 367.1±31.5 °C

BTK-IN-25

BTK-IN-25 (compound 71) is a potent inhibitor of BTK, and inhibits BTK(C481S) with an IC50 value of 0.77 nM. BTK-IN-25 inhibits BTK in DOHH2 cells with an IC50 value of 1 nM[1].

  • CAS Number: 2562351-92-0
  • MF: C28H27F2N3O5
  • MW: 523.53
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

G-744

G-744 is a highly potent, selective Btk inhibitor with an IC50 of 2 nM.

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

HZ-A-005

HZ-A-005 is a potent, selective, and covalent Bruton’s tyrosine kinase (BTK) inhibitor. HZ-A-005 markedly decreases tumor growth in xenograft mouse models[1].

  • CAS Number: 2041789-14-2
  • MF: C25H23ClN6O2
  • MW: 474.94
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PCI-33380

PCI-33380 is an irreversible Bruton's Tyrosine Kinase (BTK) inhibitor (fluorescent probe).

  • CAS Number: 1022899-36-0
  • MF: C46H52BF2N11O3
  • MW: 855.78
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Ibrutinib-biotin

Ibrutinib-biotin is a probe that consists of Ibrutinib linked to biotin via a long chain linker, extracted from patent WO2014059368A1 Compound 1-5, has an IC50 of 0.755-1.02 nM for BTK.

  • CAS Number: 1599432-18-4
  • MF: C56H80N12O9S
  • MW: 1097.37
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Btk inhibitor 1 (R enantiomer)

Btk inhibitor 1 R enantiomer is a pyrazolo[3,4-d]pyrimidine derivative as a Btk kinase inhibitor.IC50 value:Target: BtkFrom PCT Int. Appl. (2012), WO 2012158843 A2 20121122.

  • CAS Number: 1022150-12-4
  • MF: C22H22N6O
  • MW: 386.450
  • Catalog: Btk
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 626.3±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 332.6±31.5 °C

PROTAC BTK Degrader-2

PROTAC BTK Degrader-2 is a potent BTK PROTAC degrader. PROTAC BTK Degrader-2 effectively reduces BTK protein levels[1].

  • CAS Number: 2250382-66-0
  • MF: C47H54F2N8O13
  • MW: 976.97
  • Catalog: PROTAC
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Edralbrutinib

Edralbrutinib is a potent BTK inhibitor[1].

  • CAS Number: 1858206-58-2
  • MF: C26H21F2N5O3
  • MW: 489.47
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Btk inhibitor 1

Btk inhibitor 1 is a pyrazolo[3,4-d]pyrimidine derivative as a Btk kinase inhibitor.IC50 value:Target: BtkFrom PCT Int. Appl. (2012), WO 2012158843 A2 20121122.

  • CAS Number: 1412418-47-3
  • MF: C22H22N6O
  • MW: 386.45000
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Acalabrutinib

Acalabrutinib is a novel, potent, and highly selective BTK inhibitor, with an IC50 of 3 nM and EC50 of 8 nM in in vitro assay.

  • CAS Number: 1420477-60-6
  • MF: C26H23N7O2
  • MW: 465.507
  • Catalog: Btk
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JDB175

JDB175 is a highly selective BTK inhibitor with oral activity and excellent blood-brain barrier penetration. JDB175 shows good activity in the mouse model of central nervous system lymphoma without obvious signs of toxicity, effectively inhibits the proliferation of BTK signaling pathway of human lymphoma cells, induces cell cycle arrest, and promotes cell apoptosis [1].

  • CAS Number: 2635328-79-7
  • MF: C26H21F3N4O2
  • MW: 478.47
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

BTK-IN-26

BTK-IN-26 (compound 18) is a potent inhibitor of Bruton's tyrosine kinase (BTK) and its C481 mutant, with IC50 values of 0.7 and 0.8 nM for BTK and BTK C481S, respectively. BTK-IN-26 can be used for cancer and autoimmune diseases research[1].

  • CAS Number: 2762043-61-6
  • MF: C27H26D3FN6O3
  • MW: 507.57
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Vecabrutinib

Vecabrutinib is a potent, noncovalent BTK and ITK inhibitor, with Kd of 0.3 nM and 2.2 nM, respectively; Vecabrutinib shows an IC50 of 24 nM for ITK.

  • CAS Number: 1510829-06-7
  • MF: C22H24ClF4N7O2
  • MW: 529.918
  • Catalog: Btk
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: 776.0±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 423.1±32.9 °C

(S)-Sunvozertinib

(S)-Sunvozertinib ((S)-DZD9008), the S-enantiomer of Sunvozertinib, shows inhibitory activity against EGFR exon 20 NPH and ASV insertions, EGFR L858R/T790M mutation and Her2 exon20 YVMA insertion (IC50=51.2 nM, 51.9 nM, 1 nM, and 21.2 nM, respectively). (S)-Sunvozertinib also inhibits BTK[1].

  • CAS Number: 2370013-49-1
  • MF: C29H35ClFN7O3
  • MW: 584.08
  • Catalog: EGFR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Ibrutinib-d5

Ibrutinib D5 (PCI-32765 D5) is a deuterium labeled Ibrutinib. Ibrutinib is a selective, irreversible Btk inhibitor[1].

  • CAS Number: 1553977-17-5
  • MF: C25H19D5N6O2
  • MW: 445.52800
  • Catalog: Btk
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A