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LY2444296 1346133-11-6

LY2444296 1346133-11-6

CAS No.: 1346133-11-6

LY2444296 is an orally bioactive, high-affinity, selective, short-acting KOPR antagonist (inhibitor) with Ki of ~1 nM. L
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This product is for research use only, not for human use. We do not sell to patients.

LY2444296 is an orally bioactive, high-affinity, selective, short-acting KOPR antagonist (inhibitor) with Ki of ~1 nM. LY2444296 has anxiolytic (anti-anxiety)-like effects.

Physicochemical Properties


Molecular Formula C24H22F2N2O2
Molecular Weight 408.4405
Exact Mass 408.164
CAS # 1346133-11-6
PubChem CID 56655502
Appearance Light yellow to yellow solid powder
LogP 4.4
Hydrogen Bond Donor Count 1
Hydrogen Bond Acceptor Count 5
Rotatable Bond Count 6
Heavy Atom Count 30
Complexity 569
Defined Atom Stereocenter Count 1
SMILES

FC1=C([H])C([H])=C([H])C(=C1[H])[C@]1([H])C([H])([H])C([H])([H])C([H])([H])N1C([H])([H])C1C([H])=C([H])C(=C([H])C=1[H])OC1C([H])=C([H])C(C(N([H])[H])=O)=C([H])C=1F

InChi Key WHHMECUDUQRPJT-QFIPXVFZSA-N
InChi Code

InChI=1S/C24H22F2N2O2/c25-19-4-1-3-17(13-19)22-5-2-12-28(22)15-16-6-9-20(10-7-16)30-23-11-8-18(24(27)29)14-21(23)26/h1,3-4,6-11,13-14,22H,2,5,12,15H2,(H2,27,29)/t22-/m0/s1
Chemical Name

3-fluoro-4-[4-[[(2S)-2-(3-fluorophenyl)pyrrolidin-1-yl]methyl]phenoxy]benzamide
Synonyms

LY2444296; LY-2444296
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


ln Vivo LY2444296 showed anxiolytic-like effects in the EPM test [1]. LY2444296 (3 mg/kg; i.p.; 30 minutes before U69,593 administration) inhibits behavioral and neuroendocrine effects caused by the reference kappa agonist U69,593 in cocaine-naïve rats [2]. LY2444296 lowers anxiety-like and depressive-like behaviors and CORT release in rats assessed following chronic self-administration of cocaine, but not in cocaine-naïve rats [2]
Animal Protocol Animal/Disease Models: Adult male SD (SD (Sprague-Dawley)) rat (240–250 g) [2]
Doses: 3 mg/kg
Route of Administration: intraperitoneal (ip) injection; 30 minutes before administration of U69,593
Experimental Results: Prevention of U69,593 effects on the untreated Behavioral and neuroendocrine effects in rats exposed to cocaine.
References

[1]. Two short-acting kappa opioid receptor antagonists (zyklophin and LY2444296) exhibited different behavioral effects from the long-acting antagonist norbinaltorphimine in mouse anxiety tests. Neurosci Lett. 2016 Feb 26;615:15-20.

[2]. "Effects of the novel relatively short-acting kappa opioid receptor antagonist LY2444296 in behaviors observed after chronic extended-access cocaine self-administration in rats". Psychopharmacology (Berl). 2017 Aug;234(15):2219-2231.


Solubility Data


Solubility (In Vitro) Ethanol : ~27.5 mg/mL (~67.33 mM)
Solubility (In Vivo) Solubility in Formulation 1: ≥ 2.75 mg/mL (6.73 mM) (saturation unknown) in 10% EtOH + 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 27.5 mg/mL clear EtOH 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 2: ≥ 2.75 mg/mL (6.73 mM) (saturation unknown) in 10% EtOH + 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 27.5 mg/mL clear EtOH stock solution to 900 μL of corn oil and mix well.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.4483 mL 12.2417 mL 24.4834 mL
5 mM 0.4897 mL 2.4483 mL 4.8967 mL
10 mM 0.2448 mL 1.2242 mL 2.4483 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.