Lorpucitinib is an inhibitor (blocker/antagonist) of intestinal JAK kinase utilized in study/research of inflammatory bowel disease.

Physicochemical Properties

Molecular Formula	C22H28N6O2
Molecular Weight	408.4967
Exact Mass	408.227
CAS #	2230282-02-5
PubChem CID	134611548
Appearance	White to off-white solid powder
Density	1.4±0.1 g/cm3
Index of Refraction	1.691
LogP	-0.82
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	6
Heavy Atom Count	30
Complexity	668
Defined Atom Stereocenter Count	0
InChi Key	NJKMSBSVJSQUBU-UHFFFAOYSA-N
InChi Code	InChI=1S/C22H28N6O2/c1-22(2,30)13-26-19(29)11-18-27-17-12-25-21-16(8-10-24-21)20(17)28(18)15-5-3-14(4-6-15)7-9-23/h8,10,12,14-15,30H,3-7,11,13H2,1-2H3,(H,24,25)(H,26,29)
Chemical Name	2-[3-[4-(cyanomethyl)cyclohexyl]-3,5,8,10-tetrazatricyclo[7.3.0.02,6]dodeca-1,4,6,8,11-pentaen-4-yl]-N-(2-hydroxy-2-methylpropyl)acetamide
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 Note: This product requires protection from light (avoid light exposure) during transportation and storage.
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]. Leonard KA, Madge LA, Krawczuk PJ, Wang A, Kreutter KD, Bacani GM, Chai W, Smith RC, Tichenor MS, Harris MC, Malaviya R, Seierstad M, Johnson ME, Venable JD, Kim S, Hirst GC, Mathur AS, Rao TS, Edwards JP, Rizzolio MC, Koudriakova T. Discovery of a Gut-Re.

Additional Infomation

Lorpucitinib is an orally bioavailable pan-inhibitor of the Janus associated-kinases (JAKs), with potential immunomodulatory and anti-inflammatory activities. Upon oral administration, lorpucitinib works in the gastrointestinal (GI) tract where it targets, binds to and inhibits the activity of the JAKs, thereby disrupting JAK-signal transducer and activator of transcription (STAT) signaling pathways and the phosphorylation of STAT proteins. This may inhibit the release of pro-inflammatory cytokines and chemokines, reducing inflammatory responses and preventing inflammation-induced damage. The Janus kinase family of non-receptor tyrosine kinases, which includes tyrosine-protein kinase JAK1 (Janus kinase 1; JAK1), tyrosine-protein kinase JAK2 (Janus kinase 2; JAK2), tyrosine-protein kinase JAK3 (Janus kinase 3; JAK3) and non-receptor tyrosine-protein kinase TYK2 (tyrosine kinase 2), plays a key role in cytokine signaling and inflammaton.

Solubility Data

Solubility (In Vitro)

DMSO : ~250 mg/mL (~612.00 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.08 mg/mL (5.09 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 20.8 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: ≥ 2.08 mg/mL (5.09 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 20.8 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: ≥ 2.08 mg/mL (5.09 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 20.8 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	2.4480 mL	12.2399 mL	24.4798 mL
	5 mM	0.4896 mL	2.4480 mL	4.8960 mL
	10 mM	0.2448 mL	1.2240 mL	2.4480 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.