YYSW001 | YYSW001 : Inhibitor of JAK1
RATINGS:
Cellular Use: (1 reviews)

In Model Organisms: (1 reviews)
Control Compounds
Chemical Information
Vendors

Probe Summary

Targets Biochemical/Biophysical Potency Cellular Potency
JAK1
  • IC50:6 ± 0.3 nM
  • IC50:48 ± 6 nM
Inhibitor
up to 1 uM

Selectivity

In Vitro Selectivity Assessment
Potency Assay Off-Target:
KinomeSCAN Screening at concentration of 1000 nM, against a panel of 403 kinases demonstrated remark ...
Selectivity Assessment Description:
YYSW001 potently inhibited only two kinases, which were the intended target JAK1 and the only off-ta ...
In Cell Selectivity Assessment
Potency Assay Off-Target:
GM-CSF-induced STAT5 phosphorylation (JAK2-STAT5 IC50 = 5.530 μM).

Potency
Cellular
In Vitro

JAK1

Mode of Action: Inhibitor

Structure-Activity-Relationship data available? Yes

DOI Reference: 10.1021/acs.jmedchem.5c03183

In Vivo Validations

Rat
Dose: 3 mg/Kg
Route of delivery: Intravenous
Plasma half life: 2.8 ± 0.3 h
Systemic clearance: 0.7 ± 0.1 L/h/Kg
Area Under the Curve:: 3831.25 ± 547.5 h·μg/L
Volume of Distribution at Steady-State: 3.1 ± 0.4 L/Kg

DOI Reference: 10.1021/acs.jmedchem.5c03183

Dose: 3 mg/Kg
Route of delivery: Oral
Plasma half life: 2.8 ± 0.2 h
Systemic clearance: 1.2 ± 0.2 L/h/Kg
Cmax: 328.61 ± 86.7 μg/L
Tmax: 3.0 ± 1.1 h
Area Under the Curve:: 2277.65 ± 438.1 h·μg/L
Bioavailability: 61.8%
Volume of Distribution at Steady-State: 5.0 ± 1.0 L/Kg

DOI Reference: 10.1021/acs.jmedchem.5c03183

Dose: 5 mg/Kg
Route of delivery: Intravenous
Plasma half life: 1.96 ± 0.33 h
Systemic clearance: 2.41 ± 0.13 L/h/Kg
Area Under the Curve:: 2054.79 ± 110.71 h·μg/L
Volume of Distribution at Steady-State: 6.78 ± 1.05 L/Kg

DOI Reference: 10.1021/acs.jmedchem.5c03183

Dose: 10 mg/Kg
Route of delivery: Oral
Plasma half life: 2.2 ± 0.6 h
Systemic clearance: 1.1 ± 0.1 L/h/kg
Cmax: 1323.53 ± 328.2 μg/L
Tmax: 3.2 ± 1.3 h
Area Under the Curve:: 8543.24 ± 971.2 h·μg/L
Bioavailability: 65.6%
Volume of Distribution at Steady-State: 3.6 ± 1.3 L/Kg

DOI Reference: 10.1021/acs.jmedchem.5c03183

Chemical Information

Coming Soon...

References

Cross References

Expert Reviews


(on 10 Apr 2026)
Cellular Use Rating
In Model Organisms
For this compound, 1uM should provide sufficient inhibition of JAK1 in cell assays while mostly sparing its off-target kinases. This is based on the cell lines tested, so it could be that higher doses...
Note: The Chemical Probes Portal only endorses compounds as chemical probes for use as specific and selective modulators of the proposed target if they receive three or more (3-4) stars. Read more about our evaluation criteria