IDO1-IN-18 (Compound 14) is a potent IDO1 inhibitor. IDO1-IN-18 may be used for studying cancer diseases.

Physicochemical Properties

Molecular Formula	C23H18F4N2O3
Molecular Weight	446.394239902496
Exact Mass	446.125
CAS #	2328099-08-5
PubChem CID	138609137
Appearance	White to off-white solid powder
LogP	2.9
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	8
Rotatable Bond Count	5
Heavy Atom Count	32
Complexity	642
Defined Atom Stereocenter Count	0
SMILES	O1CC(C2=CC=C(C3=C(CO)C=C(C(F)(F)F)N=C3)C=C2)(C(NC2=CC=C(F)C=C2)=O)C1
InChi Key	KTZHBUHZJXHRMG-UHFFFAOYSA-N
InChi Code	InChI=1S/C23H18F4N2O3/c24-17-5-7-18(8-6-17)29-21(31)22(12-32-13-22)16-3-1-14(2-4-16)19-10-28-20(23(25,26)27)9-15(19)11-30/h1-10,30H,11-13H2,(H,29,31)
Chemical Name	N-(4-fluorophenyl)-3-[4-[4-(hydroxymethyl)-6-(trifluoromethyl)pyridin-3-yl]phenyl]oxetane-3-carboxamide
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

J. Med. Chem. 2022, 65, 8, 6001–6016.

Solubility Data

Solubility (In Vitro)

DMSO : ~250 mg/mL (~560.05 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.08 mg/mL (4.66 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 (4.66 mM) 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; with ultrasonication. 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 (4.66 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	2.2402 mL	11.2010 mL	22.4019 mL
	5 mM	0.4480 mL	2.2402 mL	4.4804 mL
	10 mM	0.2240 mL	1.1201 mL	2.2402 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.