Pacritinib (SB1518) is an effective mutant inhibitor of wild-type JAK2 and JAK2V617F with IC50 of 23 nM and 19 nM, respectively. Pacritinib also inhibited FLT3 and its mutant FLT3D835Y with IC50 of 22 nM and 6 nM, respectively.
| Molecular Weight | 472.58 |
| Formula | C28H32N4O3 |
| CAS Number | 937272-79-2 |
| Form | Solid |
| Solubility (25°C) | DMSO 5 mg/mL (Need ultrasonic) |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
[1] Annkristin Heine, et al. Pacritinib protects dendritic cells more efficiently than ruxolitinib
[2] Douglas Tremblay, et al. Pacritinib to treat myelofibrosis patients with thrombocytopenia
[5] Yan Beauverd, et al. Pacritinib: a new agent for the management of myelofibrosis?
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