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Purity: ≥98%
LY-334370 HCl, the hydrochloride of LY-334370, is a novel, potent and selective 5-HT1F receptor agonist with Ki values of 1.6 nM. It displays antimigraine effects.
| Targets |
5-HT1F Receptor ( Ki = 1.6 nM )
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|---|---|
| ln Vitro |
LY334370 does not exhibit vasoconstrictor effects on human cerebral arteries in vitro, unless it is administered at a dose of 10-5 M, at which point it causes an 8.5±5.7% contraction, which is not statistically significant[1].
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| ln Vivo |
Intravenous LY334370 administration at 3 mg/kg (n = 3) or 10 mg/kg (n = 6) causes an increase in dural blood vessel diameter of 135±6% and 106±11%, respectively, after electrical stimulation; these values do not differ significantly from the corresponding control values. Since dural blood vessel diameter is actually 43±4 arbitrary units before drug injection and 43±4 arbitrary units 15 minutes after injection of LY334370 (10 mg/kg), LY334370 has no effect on dural blood vessel diameter per se[1].
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| Cell Assay |
n this study, human cerebral arteries are used. Segments are prepared as previously described, but briefly they are placed in a buffer solution containing (mM) NaCl 119, NaHCo3 15, KCl 4.6, CaCl2 1.5, NaH2PO4 1.2, MgCl2 1.2, and glucose 5.5. Sections of the vessel, measuring 0.5 mm in diameter and 1 to 2 mm in length, are placed in a tissue bath that is heated to 37°C and contains a buffer solution that has been agitated with 5% CO2 and 95% O2. Four mN of tension is applied to the vessel segments, and they are left to stabilize there for one to one and a half hours. Exposure to 60 mM KCl is used to test the reactivity of vessels. Only if the response is similar to the segment used for LY334370 testing is this repeated twice for each segment. As a percentage of the maximum KC1 response, responses to LY334370 are computed[1].
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| Animal Protocol |
There are 300–400 g male Sprague-Dawley rats used. Intravital microscopy and a video dimension analyzer are used to measure the diameter of a branch of the middle meningeal artery in the intact skull of rats housed in a stereotaxic frame after their skulls have been thinned and exposed through drilling. A bipolar stimulating electrode, positioned on the cranial window surface about 200 μM away from the vessel of interest, is used to induce neurogenic vasodilation. After LY334370 (3 or 10 mg/kg, iv.) is administered five minutes after an electrical stimulation response that produces a control vasodilation is produced, and after another fifteen minutes, the electrical stimulation is repeated. For each response, the mean maximum percentage increase in dural vessel diameter relative to the pre-stimulus baseline is calculated. Analysis of variance is then used to compare the vasodilation responses evoked in the presence or absence of LY334370, and paired t-tests are employed to make these comparisons[1].
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| References | |
| Additional Infomation |
This study investigated whether the selective 5HT1F receptor agonist LY334370 has other possible antimigraine mechanisms in addition to the proposed inhibition of dural plasma extravasation. LY334370 (up to 10(-5) M) had no vasoconstrictor effects on human cerebral arteries in vitro. It had no effect (up to 10 mg kg-1, i.v.) on neurogenic vasodilation of dural blood vessels produced by electrical stimulation of the dura mater in anesthetized rats. Nor had it any effect (at 3 mg kg-1, i.v.) on the hyperalgesia produced by injection of carrageenan into the paw of conscious rats or on nociceptive reflex responses in the spinalized, decerebrate rabbit (up to 3 mg kg-1, i.v.), indicating that it has no general analgesic properties. However, it significantly inhibited activation of second-order neurons in the trigeminal nucleus caudalis produced by electrical stimulation of the dura mater in anesthetised rats at 3 mg kg-1, i.v. These results provide evidence to suggest that LY334370 has a central mechanism of action in blocking the transmission of nociceptive impulses within the trigeminal nucleus caudalis and that this may represent a mechanism through which it has its antimigraine effect.[1]
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| Molecular Formula |
C21H23CLFN3O
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|---|---|
| Molecular Weight |
387.878227472305
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| Exact Mass |
387.151
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| Elemental Analysis |
C, 65.03; H, 5.98; Cl, 9.14; F, 4.90; N, 10.83; O, 4.12
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| CAS # |
199673-74-0
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| Related CAS # |
199673-74-0(LY 334370 hydrochloride);182563-08-2 (LY 334370 Free Base);
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| PubChem CID |
19710026
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| Appearance |
Typically exists as solid at room temperature
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| LogP |
5.181
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| Hydrogen Bond Donor Count |
3
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| Hydrogen Bond Acceptor Count |
3
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| Rotatable Bond Count |
3
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| Heavy Atom Count |
27
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| Complexity |
486
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| Defined Atom Stereocenter Count |
0
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| SMILES |
C(NC1C=CC2=C(C=1)C(C1CCN(C)CC1)=CN2)(=O)C1=CC=C(F)C=C1.[H]Cl
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| InChi Key |
DGPDGAPZTPSHBL-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C21H22FN3O.ClH/c1-25-10-8-14(9-11-25)19-13-23-20-7-6-17(12-18(19)20)24-21(26)15-2-4-16(22)5-3-15;/h2-7,12-14,23H,8-11H2,1H3,(H,24,26);1H
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| Chemical Name |
4-Fluoro-N-[3-(1-methyl-4-piperidinyl)-1H-indol-5-yl]benzamide hydrochloride
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| Synonyms |
LY 334370; LY-334370; LY334370; LY 334370 hydrochloride; 199673-74-0; LY334370 (hydrochloride); 4-Fluoro-N-[3-(1-methyl-4-piperidinyl)-1H-indol-5-yl]benzamide hydrochloride; 4-fluoro-N-[3-(1-methyl-4-piperidinyl)-1H-indol-5-yl]benzamidehydrochloride; BenzaMide, 4-fluoro-N-[3-(1-Methyl-4-piperidinyl)-1H-indol-5-yl]-, Monohydrochloride; 4-fluoro-N-[3-(1-methylpiperidin-4-yl)-1H-indol-5-yl]benzamide;hydrochloride; SCHEMBL8604274; LY 334370 hydrochloride; LY 334370 HCl.
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| HS Tariff Code |
2934.99.9001
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| 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)
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| Solubility (In Vitro) |
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
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| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.5781 mL | 12.8906 mL | 25.7812 mL | |
| 5 mM | 0.5156 mL | 2.5781 mL | 5.1562 mL | |
| 10 mM | 0.2578 mL | 1.2891 mL | 2.5781 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.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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