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P505-15 hydrochloride

Cat. No. M2063
P505-15 hydrochloride Structure


Size Price Availability Quantity
10mg USD 180 In stock
50mg USD 570 In stock
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Quality Control
  • Current batch:
  • Purity >98%
  • COA
  • MSDS
Biological Activity

P505-15 (also known as PRT062607) is a highly specific and potent, orally bioavailable small molecule spleen tyrosine kinase (Syk) inhibitor (IC50 = 1 nM) with anti-Syk activity that is at least 80-fold greater than its affinity for other kinases. P505-15 potently inhibited B cell antigen receptor-mediated B cell signaling and activation (IC50 0.27 and 0.28 μM, respectively) and Fcε receptor 1-mediated basophil degranulation (IC50 0.15 μM) in human whole blood. Similar levels of ex vivo inhibition were measured after dosing in mice (Syk signaling IC50 0.32 μM). P505-15 (PRT062607) decreased cell viability in NHL and CLL. Oral administration of P505-15 produced dose-dependent anti-inflammatory activity in two rodent models of rheumatoid arthritis. In addition, combination treatment of primary CLL cells with P505-15 plus fludarabine produced synergistic enhancement of activity at nanomolar concentrations.

Customer Product Validations & Biological Datas
Source J Pharmacol Exp Ther (2013). Figure 1. P505-15
Method flow cytometry
Cell Lines Ramos cells
Concentrations 2 μM
Incubation Time 72 h
Results These data are consistent with previous observations that P505-15 is a selective and potent inhibitor of Syk, with no appreciable activity against other BCR-related kinases
Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
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 resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 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 resveratrol of 11.2 mg/kg.

Chemical Information
Molecular Weight 429.91
Formula C19H23N9O.HCl
CAS Number 1370261-97-4
Purity >98%
Solubility DMSO 80 mg/mL
Water 80 mg/mL
Storage at -20°C

The selective SYK inhibitor P505-15 (PRT062607) inhibits B cell signaling and function in vitro and in vivo and augments the activity of fludarabine in chronic lymphocytic leukemia.
Spurgeon SE, et al. J Pharmacol Exp Ther. 2013 Feb;344(2):378-87. PMID: 23220742.

Specific inhibition of spleen tyrosine kinase suppresses leukocyte immune function and inflammation in animal models of rheumatoid arthritis.
Coffey G, et al. J Pharmacol Exp Ther. 2012 Feb;340(2):350-9. PMID: 22040680.

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Keywords: P505-15 hydrochloride, PRT062607 supplier, Syk, inhibitors

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