AA 29504

GABAA receptor modulator CAS# 945828-50-2

AA 29504

Catalog No. BCC7829----Order now to get a substantial discount!

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Chemical structure

AA 29504

3D structure

Chemical Properties of AA 29504

Cas No. 945828-50-2 SDF Download SDF
PubChem ID 23188887 Appearance Powder
Formula C19H25N3O2 M.Wt 327.42
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 100 mM in DMSO
Chemical Name ethyl N-[2-amino-4-[(2,4,6-trimethylphenyl)methylamino]phenyl]carbamate
SMILES CCOC(=O)NC1=C(C=C(C=C1)NCC2=C(C=C(C=C2C)C)C)N
Standard InChIKey SCOOTUMXCXKEAD-UHFFFAOYSA-N
Standard InChI InChI=1S/C19H25N3O2/c1-5-24-19(23)22-18-7-6-15(10-17(18)20)21-11-16-13(3)8-12(2)9-14(16)4/h6-10,21H,5,11,20H2,1-4H3,(H,22,23)
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 AA 29504

DescriptionPositive allosteric modulator of GABAA receptors. Modulates both α4β3δ-containing extrasynaptic receptors and α1β3γ2S-containing receptors in Xenopus oocytes, displaying a stronger modulatory effect at the former. Reduces motor coordination and exhibits anxiolytic effects in vivo.

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Preparing Stock Solutions of AA 29504

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.0542 mL 15.2709 mL 30.5418 mL 61.0836 mL 76.3545 mL
5 mM 0.6108 mL 3.0542 mL 6.1084 mL 12.2167 mL 15.2709 mL
10 mM 0.3054 mL 1.5271 mL 3.0542 mL 6.1084 mL 7.6355 mL
50 mM 0.0611 mL 0.3054 mL 0.6108 mL 1.2217 mL 1.5271 mL
100 mM 0.0305 mL 0.1527 mL 0.3054 mL 0.6108 mL 0.7635 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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Background on AA 29504

AA 29504, {2-amino-4-(2, 4, 6-trimethylbenzylamino)-phenyl}-carbamic acid ethyl ester is a positive modulator of extrasynaptic GABAA receptors. AA 29504 is also an analogue of the KCNQ channel opener retigabine with a 3-4 fold lower potency than retigabine. The EC50 of AA 29504 at KCNQ channels is between 9.6 and 13.5 μM [2]. AA 29504 at 1 µM had no agonist activity when tested at α1β3γ2s or α4β3δ GABAA receptors expressed in Xenopus oocytes, but left-shifted the EC50 of GABA and gaboxadol (THIP) at both receptors. The maximum GABA response was unchanged at α1β3γ2s receptors by AA 29504 (1 µM), but increased 3-fold at α4β3δ receptors [1].

GABA transiently activates synaptic GABAA receptors, leading to the classical inhibitory post-synaptic currents (phasic inhibition) [2]. KCNQ (also termed Kv7) channels are voltage-dependent potassium channels composed of homo- and heteromeric complexes of five different KCNQ subunits (KCNQ1–5, or called Kv7.1–Kv7.5) [3].

In Xenopus oocytes, AA 29504 at concentrations below 3 µM exhibited no intrinsic activity, whereas at 3 µM and above AA 29504 could induce a small response, which could not be blocked by bicuculline. Treatment with AA 29504 at a concentration of 1 µM showed no intrinsic activity at GABAA receptors and KCNQ channels, but left-shifted the concentration-response curve of GABA without affecting the maximum response to GABA [1].

In sub-chronic phencyclidine (PCP)-treated rats, acute administration of AA 29504 at 1 and 4 mg/kg reversed the PCP-induced deficit, but the middle dose of 2 mg/kg did not. Treatment with AA 29504 did not affect locomotor activity. AA 29504-treated animal groups were unable to significantly discriminate the novel objects from the familiar objects. The group treated with AA 29504 at 2 mg/kg showed a small but significant preference for the left object [2].

References:
[1].  K. Hoestgaard-Jensen, N.O. Dalby, T.D. Wolinsky, et al. Pharmacological characterization of a novel positive modulator at α4β3δ-containing extrasynaptic GABAA receptors. Neuropharmacology, 2010, 58:702-711.
[2].  Trine Damgaard, Niels Plath, Jo C. Neill, et al. Extrasynaptic GABAA receptor activation reverses recognition memory deficits in an animal model of schizophrenia. Psychopharmacology, 2011, 214:403-413.
[3].  Henrik H. Hansen, Christina Ebbesen, Claus Mathiesen, et al. The KCNQ Channel Opener Retigabine Inhibits the Activity of Mesencephalic Dopaminergic Systems of the Rat. Journal of Pharmacology and Experimental Therapeutics, 2006, 318(3): 1006–1019.

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References on AA 29504

Pharmacological characterization of a novel positive modulator at alpha 4 beta 3 delta-containing extrasynaptic GABA(A) receptors.[Pubmed:20060846]

Neuropharmacology. 2010 Mar-Apr;58(4-5):702-11.

The in vitro and in vivo pharmacological effects of [2-amino-4-(2,4,6-trimethylbenzylamino)-phenyl]-carbamic acid ethyl ester (AA29504), which is a close analogue of retigabine, have been investigated. AA29504 induced a rightward shift of the activation threshold at cloned KCNQ2, 2/3 and 4 channels expressed in Xenopus oocytes, with a potency 3-4fold lower than retigabine. AA29504 (1 muM) had no agonist activity when tested at alpha(1)beta(3)gamma(2s) or alpha(4)beta(3)delta GABA(A) receptors expressed in Xenopus oocytes, but left-shifted the EC(50) for GABA and gaboxadol (THIP) at both receptors. The maximum GABA response at alpha(1)beta(3)gamma(2s) receptors was unchanged by AA29504 (1 muM), but increased 3-fold at alpha(4)beta(3)delta receptors. In slices prepared from the prefrontal cortex of adult rats AA29504 had no effect alone on the average IPSC or the tonic current in layer II/III pyramidal neurons, but potentiated the effect of gaboxadol on both phasic and tonic currents. Thus, the effects of gaboxadol could be positively modulated by AA29504. Systemic administration of AA29504 at doses relevant for modulating GABA transmission produced anxiolytic effects and reduced motor coordination consistent with activity at GABA(A) receptors. We conclude that AA29504 exerts a major action via alpha(4)beta(3)delta-containing GABA(A) receptors, which will be important for interpreting its effect in vivo.

Description

Positive allosteric modulator of GABAA receptors

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