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LY 334370 hydrochloride

Selective 5-HT1F agonist CAS# 199673-74-0

LY 334370 hydrochloride

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Chemical structure

LY 334370 hydrochloride

3D structure

Chemical Properties of LY 334370 hydrochloride

Cas No. 199673-74-0 SDF Download SDF
PubChem ID 19710026 Appearance Powder
Formula C21H23ClFN3O M.Wt 387.88
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 25 mM in water with gentle warming and to 25 mM in DMSO with gentle warming
Chemical Name 4-fluoro-N-[3-(1-methylpiperidin-4-yl)-1H-indol-5-yl]benzamide;hydrochloride
SMILES CN1CCC(CC1)C2=CNC3=C2C=C(C=C3)NC(=O)C4=CC=C(C=C4)F.Cl
Standard InChIKey DGPDGAPZTPSHBL-UHFFFAOYSA-N
Standard InChI 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
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of LY 334370 hydrochloride

DescriptionSelective 5-HT1F receptor agonist (Ki values are 1.87, 16.4, > 100 (IC50), 176, 189, 281, 1280, 1530, 1550, > 3000 (IC50) and 3250 nM for 5-HT1F, 5-HT1A, 5-HT4, 5-HT1E, 5-HT1B, 5-HT1D, 5-HT2B, 5-HT2A, 5-HT7, 5-HT6 and 5-HT2C receptors respectively). Displays antimigraine effects.

LY 334370 hydrochloride Dilution Calculator

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Preparing Stock Solutions of LY 334370 hydrochloride

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.5781 mL 12.8906 mL 25.7812 mL 51.5623 mL 64.4529 mL
5 mM 0.5156 mL 2.5781 mL 5.1562 mL 10.3125 mL 12.8906 mL
10 mM 0.2578 mL 1.2891 mL 2.5781 mL 5.1562 mL 6.4453 mL
50 mM 0.0516 mL 0.2578 mL 0.5156 mL 1.0312 mL 1.2891 mL
100 mM 0.0258 mL 0.1289 mL 0.2578 mL 0.5156 mL 0.6445 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on LY 334370 hydrochloride

[Phase I study of gemcitabine hydrochloride (LY 188011) combination therapy with cisplatin in the patients with non-small cell lung cancer].[Pubmed:10396316]

Gan To Kagaku Ryoho. 1999 Jun;26(7):898-907.

The combination Phase I study of gemcitabine hydrochloride with cisplatin was conducted in the patients with non-small cell lung cancer (NSCLC) at 5 investigation sites. Gemcitabine was administrated on day 1, 8 and 15 and cisplatin on day 1 of each 28-day cycle. The dosage of cisplatin was fixed to 80 mg/m2 and the dosage of Gemcitabine was gradually escalated in 3 dosing level from 600, 800 to 1,000 mg/m2. The maximum tolerated dose (MTD) and the recommended dose was determined with Continual Reassessment Method. For each dose level, 6 cases, 3 cases and 6 cases were registered respectively and all 15 cases were evaluable. In the dose level 3 with 1,000 mg/m2 of gemcitabine and 80 mg/m2 of cisplatin, grade 4 neutropenia was observed as DLT in 3 out of 6 cases, thus dose level 3 was considered as MTD and the recommended dose. Major adverse events were leukopenia, neutropenia, nausea/vomiting and anorexia. The incidence of such adverse events seemed to be dose-dependent and especially the grade of neutropenia seemed to be more serious as the dose increased. Also, the grade of liver function tests abnormal seemed to be more serious as the dose increased but the incidence as well as the grade did not have tendency of dose-dependent in another events including renal function tests abnormal. On the other hand, as to the efficacy PR was observed in 4 out of 15 cases. Based upon the results, it is necessary to discuss further the efficacy in the recommended dose in the combination therapy of gemcitabine and cisplatin.

[An early phase II study of gemcitabine hydrochloride (LY 188011). Gemcitabine Cooperative Study Group for Early Phase II].[Pubmed:8937492]

Gan To Kagaku Ryoho. 1996 Nov;23(13):1813-24.

An early phase II cooperative study of Gemcitabine Hydrochloride (abbreviated to "gemcitabine" herewith) was conducted in patients with a variety of solid tumors (i.e., lung cancer, gastric cancer, pancreatic cancer, colon/rectum cancer, cervical cancer, ovarian cancer and breast cancer) at 56 institutions. The aim of the first step (Step I) was to investigate the feasibility of gemcitabine in a variety of different solid tumors, including lung cancer regarding efficacy and safety. The aim of the second step (Step II) was as a result of step I (Responses were observed) to continue to investigate the efficacy and safety of gemcitabine in chemonaive patients with non-small cell lung cancer. As a Step I study, gemcitabine was administered once weekly at a dose of 800 mg/m2 for a consecutive 3-week period followed by a week of rest, in multiple courses. Among the 29 eligible patients with lung cancer, partial response (PR) was achieved in 3 patients (25.0%, 95% confidence interval: 5.5-57.2%) out of 12 chemonaive patients. Adverse reactions (grade 3 or higher) seen in 29 patients with lung cancer were neutropenia (27.6%), leukopenia (13.8%), decreased hemoglobin (13.8%), thrombocytopenia (10.3%), malaise (6.9%), anorexia (3.4%), nausea/vomiting (3.4%), diarrhea (3.4%), dyspnea (3.4%) and interstitial pneumonia (3.4%). In other types of solid tumors, PR was achieved in 2 (8.7%) out of 23 eligible patients with cervical cancer and in 1 (5.3%) of 19 eligible patients with ovarian cancer, while the use of analgesics became unnecessary in 1 patient with pancreatic cancer. Incidence as well as severity of main adverse reactions in these patients were comparable to those seen in patients with lung cancer. A Step II study, in which gemcitabine was administered once weekly at a dose of 1,000 mg/m2 to chemonaive patients with non-small cell lung cancer, was conducted, referring to the results of Step I and clinical studies conducted overseas. The results of the Step II study demonstrated PR in 5 (14.3%, 95% confidence interval: 4.8 - 30.3%) out of 35 eligible patients with non-small cell lung cancer and that the main adverse reactions were comparable to those seen in the Step I study, posing no tolerability problems in particular.

Changes in motor activities induced by microinjections of the selective dopamine agonists LY 171555, quinpirole hydrochloride, and SK&F 38393 into the habenula nucleus.[Pubmed:3495009]

Pharmacol Biochem Behav. 1987 Mar;26(3):643-6.

The effects on behaviour of microinjections into the habenula complex of selective agonists for dopamine D-1 (SK&F 38393) and D-2 (LY 171555) receptors were documented in a holeboard, open-field test. The D-2 agonist reduced grooming responses, locomotor activity and rearing behaviour. In contrast, the D-1 agonist increased rearing and locomotor activity but was without effect on grooming responses. Neither drug produced significant effects on inspective hole exploration. The data extend findings of behavioural consequences of central D-1 receptor activation and provide direct evidence in support of the functional and behavioural importance of intrahabenular dopamine receptor sites. The findings are consistent with suggestions for feedback regulation of habenular efferents to midbrain dopaminergic neurons. Effects of both receptor agonists on some responses but not others indicates potential complex interactions between D-1 and D-2 receptors within the habenula.

Possible antimigraine mechanisms of action of the 5HT1F receptor agonist LY334370.[Pubmed:10668103]

Cephalalgia. 1999 Dec;19(10):851-8.

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.

G-protein activation at 5-HT1A receptors by the 5-ht1F ligand LY334370 in guinea-pig brain sections and recombinant cell lines.[Pubmed:9641544]

Br J Pharmacol. 1998 May;124(2):283-90.

1. G-protein activation by the 5-ht1F receptor agonist 5-(4-fluorobenzoyl)amino-3-(1-methylpiperidin-4-yl)-1H-indole fumarate (LY334370) was investigated by use of autoradiography of receptor-activated G-proteins in guinea-pig brain sections and [35S]-GTPgammaS binding responses in cell lines stably expressing human 5-HT1A (h 5-HT1A) receptors. 2. LY334370 (10 microM) caused little or no stimulation of [35S]-GTPgammaS binding in guinea-pig brain regions enriched in 5-ht1F binding sites (e.g., claustrum, caudate/putamen and thalamic nuclei), as identified by labelling with 10 nM [3H]-sumatriptan plus 10 nM 5-carboxamidotryptamine (5-CT). 3. Application of LY334370 (10 microM) to guinea-pig brain sections resulted in an increase of [35S]-GTPgammaS binding in hippocampus (123+/-17%), lateral septum (58+/-14%), dorsal raphe (57+/-10%), entorhinal (37+/-11%) and cingulate cortex (28+/-10%). This distribution fits with the G-protein activation mediated by 5-HT1A receptors as found with lisuride (10 microM), and labelling of 5-HT1A receptors by 140 pM [125I]-4-(2'-methoxy-phenyl)- -[2'-(n-2"-pyridinyl)-p-iodobenzamido]-ethyl-piperazine (p-MPPI). 4. The LY334370-mediated [35S]-GTPgammaS response was antagonized by the selective, silent 5-HT1A receptor antagonist N-[2-[4-(2-methoxyphenyl)1-piperazinyl]ethyl]-N-(2-pyridinyl)cyclohex anecarboxa-mide (WAY100635, 1 microM) in each of the brain structures investigated. The distribution pattern of the [35S]-GTPgammaS binding response and the antagonist profile suggest that the LY334370-induced response in guinea-pig brain is mediated by 5-HT1A receptors. 5. The maximal LY334370-induced [35S]-GTPgammaS binding response (83 to 94%) in membranes of recombinant C6-glial/h 5-HT1A and HeLa/h 5-HT1A cells was close to that of 5-HT, suggesting LY334370 to exert high intrinsic activity at h 5-HT1A receptors. 6. In conclusion, in guinea-pig brain sections and recombinant cell lines the 5-ht1F receptor agonist LY334370 causes G-protein activation that is mediated by 5-HT1A receptors. Caution should be taken when employing this ligand as a putative selective 5-ht1F agonist.

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