1. Epigenetics Stem Cell/Wnt Protein Tyrosine Kinase/RTK JAK/STAT Signaling Apoptosis
  2. JAK Apoptosis
  3. JAK3 covalent inhibitor-2

JAK3 covalent inhibitor-2 (compound J1b) is a selective, orally potent JAK3 inhibitor (IC50=7.2 nM) with low toxicity, anti-inflammatory activity and good bioavailability.

For research use only. We do not sell to patients.

JAK3 covalent inhibitor-2 Chemical Structure

JAK3 covalent inhibitor-2 Chemical Structure

CAS No. : 2664050-97-7

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Description

JAK3 covalent inhibitor-2 (compound J1b) is a selective, orally potent JAK3 inhibitor (IC50=7.2 nM) with low toxicity, anti-inflammatory activity and good bioavailability[1].

IC50 & Target[1]

JAK3

7.2 nM (IC50)

In Vitro

JAK3 covalent inhibitor-2 shows low cytotoxicity among HEK293, LO2, chondrocytes and RAW264.7 with IC50s (72 h) of 86.82 μM (HEK293), 61.79 μM (LO2), >32 μM (chondrocytes) and >32 μM (RAW264.7) respectively[1].
JAK3 covalent inhibitor-2 (100 mM; 90 min) shows t1/2 of 13.1 min and 43.9 min in human and rat liver microsomes, respectively. And the clean rate of 132.5 mL/min/kg and mL/min/kg, resepectively[1].
JAK3 covalent inhibitor-2 ((0.125-8 μM; 48 h)) dose-dependently induces T lymphocytes apoptosis[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Apoptosis Analysis[1]

Cell Line: CD4+ T cells , CD8[1] T cells
Concentration: 0.125, 0.5, 1, 2, 4, 8 μM
Incubation Time: 48 h
Result: Dose-dependently led to apoptosis among CD4+ and CD8+ T cells
In Vivo

Anti-inflammatory activity: JAK3 covalent inhibitor-2 (30 mg/kg, p.o.; single dose) inhibited carrageenan-induced paw edema in ICR mice, with a rapid reduction in paw thickness in J1b-treated mice[1].
Toxicity: JAK3 covalent inhibitor-2 (2 g/kg, p.o.; single dose) Liver and kidney appeare to be similar to those of normal mice, no weight loss or other adverse effects are observed[1].
Pharmacokinetics: JAK3 covalent inhibitor-2 (5 mg/kg; p.o.), clearance (Cl) 7.37 l/h/kg, oral half-life (t1/2 = 3.77 h), and bioavailability (F = 31.69%)[1].

Pharmacokinetic parameters of compound JAK3 covalent inhibitor-2 in SD rats[1]

JAK3 covalent inhibitor-2 在SD大鼠体内的药代动力学分析[1]

Route Dose (mg/kg) Cmax (mg/L) tmax (h) t1/2 (h) AUC0-t (mg/L·h) V<, V/F (L/kg) Cl, Cl/F (L/h/kg) F (%)
i.v. 5 4497.32 0.08 2.63 2161.38 8.98 (V) 2.32V (Cl) 31.69
p.o. 5 501.8 0.25 3.77 684.87 39.89 (V/F) 7.37 (Cl/F) /

Treatment of arthritis: JAK3 covalent inhibitor-2 ( 60 mg/kg , p.o. once a day) in CIA model almost complete restoration of normal joint status is achieved, and no significant weight changes or other adverse effects are observed[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: ICR mice [1]
Dosage: 30 mg/kg
Administration: p.o.
Result: Showed significant anti-inflammatory activity by oral administration.
Animal Model: C57BL/6 mice[1]
Dosage: 2 g/kg
Administration: p.o.
Result: Inhibited tumor growth. Livers and kidneys appeared to be similar to those of normal mice. No weight loss or other adverse effects were observed.
Animal Model: SD rats[1]
Dosage: 5 mg/kg
Administration: p.o
Result: JAK3 covalent inhibitor-2 had good intestinal absorption and oral bioavailability. Clearance rate (Cl) was 7.37 L/h/kg, oral half‐life (t1/2 = 3.77 h), F = 31.69%
Animal Model: CIA model mouse[1]
Dosage: JAK3 covalent inhibitor-2 (30 mg/kg), JAK3 covalent inhibitor-2 (60 mg/kg,) Tofacitinib(HY-40354) (30 mg/kg)
Administration: p.o.
Result: JAK3 covalent inhibitor-2 group at 60 mg/kg histopathological analysis showed that the joint had returned to almost normal conditions.
Molecular Weight

392.41

Formula

C20H20N6O3

CAS No.
SMILES

[O-][N+](C1=CC=CC(C2=CNC3=NC=NC(N4C[C@H](NC(C=C)=O)CCC4)=C32)=C1)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
References
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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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JAK3 covalent inhibitor-2
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