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编 号:F528169
分子式:C28H32N4O3
分子量:472.58
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10mM*1mL in DMSO
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2mg
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5mg
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10mg
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25mg
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50mg
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100mg
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生物活性:
Pacritinib (SB1518) is a potent inhibitor of both wild-type JAK2 (IC50=23 nM) and JAK2V617F mutant (IC50=19 nM). Pacritinib also inhibits FLT3 (IC50=22 nM) and its mutant FLT3D835Y (IC50=6 nM).

体内研究:
For evaluation of efficacy in the Ba/F3-JAK2V617F engraftment model, mice are treated with Pacritinib (SB1518) at doses of 50 or 150 mg/kg p.o. q.d. for 13 days, with drug dosing starting 4 days after cell inoculation. At study termination, the vehicle control mice exhibit splenomegaly and hepatomegaly (~7- and 1.3-fold, respectively), reminiscent of the symptoms found in patients with symptomatic myelofibrosis. SB1518 treatment at 150 mg/kg p.o. q.d. significantly ameliorates all these symptoms, with 60% (±9%) normalization of spleen weight and 92% (±5%) normalization of liver weight and is well tolerated without significant weight loss or any hematological toxicities, including thrombocytopenia and anemia. In rats, Pacritinib (SB1518) shows moderately fast absorption (tmax=4 h), with a peak concentration of 114 ng/mL, AUC of 599 ng?h/mL, and a terminal half-life of ~6 h following a single oral dose of 10 mg/kg. In dogs, Pacritinib (SB1518) is rapidly absorbed (tmax=2.0 h), with a peak concentration of ~12 ng/mL, AUC of 53 ng?h/mL, and a terminal half-life of 3.4 h following a single oral dose of 3 mg/kg.

体外研究:
Relative to JAK2, Pacritinib (SB1518) is two-fold less potent against TYK2 (IC50=50 nM), 23-fold less potent against JAK3 (IC50=520 nM) and 56-fold less potent against JAK1 (IC50=1280 nM). The rest of the evaluated kinases show Pacritinib 相关抗体:
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