IRAK-4 protein kinase inhibitor 2 (compound 1) is a potent inhibitor of interleukin 1 (IL-1) receptor-associated kinase 4 (IRAK-4) with IC50 of 4 μM. IRAK-4 protein kinase inhibitor 2 may be utilized to study diseases related to inflammation and immunity.

Physicochemical Properties

Molecular Formula	C14H10N4O3
Molecular Weight	282.25
Exact Mass	282.075
CAS #	301675-24-1
PubChem CID	3572750
Appearance	White to off-white solid powder
LogP	3.63
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	2
Heavy Atom Count	21
Complexity	412
Defined Atom Stereocenter Count	0
InChi Key	QPKROMNIEAEFQA-UHFFFAOYSA-N
InChi Code	InChI=1S/C14H10N4O3/c19-13(9-4-3-5-10(8-9)18(20)21)17-14-15-11-6-1-2-7-12(11)16-14/h1-8H,(H2,15,16,17,19)
Chemical Name	N-(1H-benzimidazol-2-yl)-3-nitrobenzamide
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Targets	IRAK4 4 μM (IC50)
ln Vitro	Compound 1, IRAK-4 protein kinase inhibitor 2, likewise inhibits IRAK-1, with an IC50 of less than 10 μM[1].
References	[1]. Discovery and initial SAR of inhibitors of interleukin-1 receptor-associated kinase-4. Bioorg Med Chem Lett. 2006 Jun 1;16(11):2842-5.

Solubility Data

Solubility (In Vitro)

DMSO: 10 mg/mL (35.43 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 1 mg/mL (3.54 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 10.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	3.5430 mL	17.7148 mL	35.4296 mL
	5 mM	0.7086 mL	3.5430 mL	7.0859 mL
	10 mM	0.3543 mL	1.7715 mL	3.5430 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.