BIIB129 | BIIB129 : Covalent Inhibitor of BTK
RATINGS:
Cellular Use: (2 reviews)

In Model Organisms: (2 reviews)
Control Compounds
Vendors

Probe Summary

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Targets Biochemical/Biophysical Potency Cellular Potency
BTK
  • Kd:0.63 nM
  • Activity:4.6 (log kinact/Ki)
  • IC50:1.2 nM
  • IC50:1.9 nM
  • IC50:13 nM
  • IC50:7.1 nM
  • IC50:3.2 nM
  • INH:79 nM
Covalent Inhibitor
100 nM
up to 1 µM

Selectivity

In Vitro Selectivity Assessment
Potency Assay Off-Target:
KINOMEscan, Eurofins DiscoverX, for BIIB129 was performed at 1 μM concentration. Ten and 5 out of 40 ...
In Cell Selectivity Assessment
Potency Assay Off-Target:
BIIB129 shown to bind only 4 of 190 kinases (BTK TO50 = 6.8 nM, TEC TO50 = 18 nM, ITK TO50 = 308 nM ...

Potency
Cellular
In Vitro

BTK

Mode of Action: Covalent Inhibitor

Structure-Activity-Relationship data available? No

DOI Reference: 10.1021/acs.jmedchem.4c00220

In Vivo Validations

Rat
Dose:
Route of delivery: Intravenous
Plasma half life: 3.59 h
Systemic clearance: 25 mL./min/Kg
Bioavailability: 25%
Volume of Distribution at Steady-State: 4.3 L/Kg

DOI Reference: 10.1021/acs.jmedchem.4c00220

Monkey (Cynomolgus)
Dose:
Route of delivery: Intravenous
Plasma half life: 0.29 h
Systemic clearance: 53.5 mL/min/Kg
Bioavailability: 21%
Volume of Distribution at Steady-State: 1.19 L/Kg

DOI Reference: 10.1021/acs.jmedchem.4c00220

Chemical Information

Molecular Formula C19H22N6O2
SMILEs C=CC(=O)N(C)C1CC(C)(Oc2nc(-c3cnn(C)c3)cn3nccc23)C1
InChI InChI=1S/C19H22N6O2/c1-5-17(26)24(4)14-8-19(2,9-14)27-18-16-6-7-20-25(16)12-15(22-18)13-10-21-23(3)11-13/h5-7,10-12,14H,1,8-9H2,2-4H3
Molecular weight 366.18 Da
AlogP 2.0740999999999996
HBond acceptors 8
HBond donors --
Atoms 49

References

Cross References

PubChem canSAR

Expert Reviews


(on 20 Aug 2025)
Cellular Use Rating
In Model Organisms
This BTK inhibitor has increased brain penetrance and a reasonable safety profile, making it a good probe of choice for studying BTK in neurological diseases. Its selectivity over most other kinases is...
(on 9 Jul 2026)
Cellular Use Rating
In Model Organisms
Potent BTK inhibitor which effectively penetrates the CNS with toxicology studies highlighting the probe is safe with no significant cytotoxicity issues. Extensive kinase screen reveals the probe has good...
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