Itacnosertib (TP-0184) is an inhibitor (blocker/antagonist) of JAK2, ACVR1 (ALK2) and ALK5 as described in WO2014151871.

Physicochemical Properties

Molecular Formula	C26H28N8O
Molecular Weight	468.55
Exact Mass	468.238
CAS #	1628870-27-8
PubChem CID	86290265
Appearance	Off-white to gray solid powder
Density	1.3±0.1 g/cm3
Boiling Point	675.4±65.0 °C at 760 mmHg
Flash Point	362.2±34.3 °C
Vapour Pressure	0.0±2.1 mmHg at 25°C
Index of Refraction	1.679
LogP	3.36
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	7
Heavy Atom Count	35
Complexity	633
Defined Atom Stereocenter Count	0
InChi Key	XSQKEVGTZSBVBR-UHFFFAOYSA-N
InChi Code	InChI=1S/C26H28N8O/c1-33-14-16-34(17-15-33)22-9-8-19(18-23(22)35-2)30-26-29-13-10-24(32-26)31-21-7-5-12-28-25(21)20-6-3-4-11-27-20/h3-13,18H,14-17H2,1-2H3,(H2,29,30,31,32)
Chemical Name	2-N-[3-methoxy-4-(4-methylpiperazin-1-yl)phenyl]-4-N-(2-pyridin-2-ylpyridin-3-yl)pyrimidine-2,4-diamine
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

References

[1]. Mollard, Alexis; Warner, Steven L.; Flynn, Gary A.; Vankayalapati, Hariprasad; Bearss, David J. Preparation of [(piperazinylphenyl)amino]pyrimidine derivatives as JAK2 and ALK2 inhibitors. WO2014151871 A2.

Additional Infomation

Itacnosertib is an orally bioavailable inhibitor of activin A receptor type 1 (activin receptor-like kinase 2; ALK2; ALK-2; ACRV1), with potential antineoplastic activity. Upon oral administration,itacnosertib targets, binds to and inhibits the activity of ALK-2. This prevents ALK-2-mediated signaling and inhibits cell growth in ALK-2-overexpressing tumor cells. In addition, in cancer and inflammatory conditions, ALK-2 is upregulated in response to increased signaling of pro-inflammatory cytokines, especially interleukin-6 (IL-6), and enhances the secretion of hepcidin, a peptide liver hormone and a key modulator of iron homeostasis. Blocking ALK-2-mediated pathways in inflammation and cancer leads to a decrease of hepcidin expression and restores plasma iron levels, thereby preventing low serum iron levels and anemia of chronic disease (ACD). ALK-2, a serine/threonine receptor kinase, is constitutively activated due to activating mutations or upregulated upstream signaling pathways in inflammatory conditions and certain types of cancer.

Solubility Data

Solubility (In Vitro)

DMSO : ~12.5 mg/mL (~26.68 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 1.25 mg/mL (2.67 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (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 12.5 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 1.25 mg/mL (2.67 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (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 12.5 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 1.25 mg/mL (2.67 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 12.5 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	2.1342 mL	10.6712 mL	21.3424 mL
	5 mM	0.4268 mL	2.1342 mL	4.2685 mL
	10 mM	0.2134 mL	1.0671 mL	2.1342 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.