SML1979
FM-381
≥98% (HPLC)
Synonym(s):
(E)-2-Cyano-3-(5-(1-cyclohexyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridin-2-yl)furan-2-yl)-N,N-dimethylacrylamide, 2-Cyano-3-(5-(1-cyclohexyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridin-2-yl)furan-2-yl)-N,N-dimethylacrylamide
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About This Item
Empirical Formula (Hill Notation):
C24H24N6O2
CAS Number:
Molecular Weight:
428.49
UNSPSC Code:
12352202
NACRES:
NA.77
Assay:
≥98% (HPLC)
Form:
powder
assay
≥98% (HPLC)
form
powder
color
white to beige
solubility
DMSO: 2 mg/mL, clear (warmed)
storage temp.
2-8°C
SMILES string
CN(C(/C(C#N)=C/C(O1)=CC=C1C2=NC3=CN=C(NC=C4)C4=C3N2C5CCCCC5)=O)C
InChI key
GJMZWYLOARVASY-NTCAYCPXSA-N
Biochem/physiol Actions
FM-381 is a highly potent and JAK3-selective janus kinase (JAK) inhibitor (IC50 = 127 pM/JAK3, 52 nM/JAK1, 346 nM/JAK2, 459 nM/TYK2 by radiometric assay; [ATP] = 10 μM) that targets JAK3 gatekeeper (GK) Cys909 for a reversible covalent interaction, exhibiting much reduced or little potency against a panel of 409 other kinases. FM-381 is >3-fold more potent than the JAK1/3 inhibitor Tofacitinib (IC50 = 292 pM/JAK3, 496 pM/JAK1, 2.2 nM/JAK2, 8.9 nM/TYK2 by radiometric assay; [ATP] = 10 μM) in blocking JAK1/JAK3-mediated STAT5 phosphorylation in human CD4+ T-cells upon IL-2 stimulation (ECmax ∼100 nM with FM-381), while being ineffective (up to 1 μM) against JAK3-independent STAT1/3 phosphorylation following IL-6 or TNFα stimulation. For characterization details of FM-381, please visit the FM-381 probe summary on the Structural Genomics Consortium (SGC) website.
FM-479 is the negative control for the active probe, FM-381. FM-479 is available from Sigma. To learn more about and purchase FM-479, click here.
To learn about other SGC chemical probes, visit sigma.com/sgc
FM-479 is the negative control for the active probe, FM-381. FM-479 is available from Sigma. To learn more about and purchase FM-479, click here.
To learn about other SGC chemical probes, visit sigma.com/sgc
Highly potent and selective janus kinase JAK3 inhibitor that blocks JAK1/JAK3-mediated STAT5 phosphorylation in human CD4+ T-cells.
Features and Benefits
FM-381 is a chemical probe available through a partnership with the Structural Genomics Consortium (SGC). To learn more and view other SGC chemical probes, visit sigma.com/SGC.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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