Ruxolitinib CAS#941678-49-5

CAS Number: 941678-49-5
Chemical Formula: C17H18N6
Synonyms:

(betaR)-beta-Cyclopentyl-4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazole-1-propanenitrile
(3R)-3-(4-(7H-pyrrolo[2,3-d]pyriMidin-4-yl)-1H-pyrazol-1-yl)-3-cyclopentylpropanenitrile
Roxolitinib

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Ruxolitinib CAS#941678-49-5

In November 2011, the U.S. FDA approved ruxolitinib (INCB018424) for the treatment of patients with intermediate or high-risk myelofibrosis. Ruxolitinib is an ATP-competitive inhibitor of JAK1 and JAK2 (IC50's of 3.3±1.2 nM and 2.8±1.2 nM, respectively) and inhibition occurs regardless of the JAK2V617F mutational status. Ruxolitinib is a moderately potent inhibitor of the related JAK, TYK2 (IC50=19±3.2 nM) but is selective versus JAK3 (IC50=428±243 nM). It was also selective versus a panel of 26 other kinases at concentrations approximately 100-fold the IC50 of JAK1 and JAK2. Inhibition of JAK1 and JAK2 downregulates the JAK-signal transducer and activator of transcription (STAT) pathway, inhibiting myeloproliferation, inducing apoptosis, and reducing numerous cytokine plasma levels.

Ruxolitinib Chemical Properties

Melting point	84-89°C
density	1.40
storage temp.	-20°
solubility	Soluble in DMSO (up to 28 mg/ml) or in Ethanol (up to 15 mg/ml with warming).
form	White powder.
pka	11.63±0.50(Predicted)
color	White
Stability:	Stable for 1 year from date of purchase as supplied. Solutions in DMSO or ethanol may be stored at -20° for up to 3 months.
InChI	InChI=1/C17H18N6/c18-7-5-15(12-3-1-2-4-12)23-10-13(9-22-23)16-14-6-8-19-17(14)21-11-20-16/h6,8-12,15H,1-5H2,(H,19,20,21)/t15-/s3
InChIKey	HFNKQEVNSGCOJV-UJHUVDBMNA-N
SMILES	[C@@H](C1CCCC1)(N1N=CC(C2N=CN=C3NC=CC=23)=C1)CC#N \|&1:0,r\|
CAS DataBase Reference	941678-49-5

Safety Information

HS Code	29335990
Hazardous Substances Data	941678-49-5(Hazardous Substances Data)

Product Application Of Ruxolitinib CAS#941678-49-5

Janus-associated kinases (JAKs) are cytoplasmic tyrosine kinases that are required for activating the signaling of certain cytokines and growth factor receptors. A JAK2 gene fusion mutation, JAK2V617F, that causes unchecked activation of various growth factors and cytokines, has been linked to myeloproliferative neoplasms (MPNs), including polycythemia vera, essential thrombocythemia, and primary myelofibrosis. Ruxolitinib is a potent ATP mimetic that inhibits both JAK1 and JAK2 with IC50 values of 2.7 and 4.5 nM, respectively and is relatively less selective for JAK3 (IC50 = 322 nM). It can block interleukin-6 (IL-6) signaling (IC50 = 281 nM) and proliferation of JAK2V617F+ Ba/F3 cells (IC50 = 127 nM). In primary cultures, ruxolitinib preferentially suppresses erythroid progenitor colony formation from JAK2V617F+ polycythemia vera patients (IC50 = 67 nM) versus healthy donors (IC50 > 400 nM). In a mouse model of JAK2V617F+ MPN, 90 mg/kg ruxolitinib reduced splenomegaly, decreased circulating levels of IL-6 and TNF-α, eliminated neoplastic cells, and prolonged survival of the treated animals.[Cayman Chemical]

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