WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 530441

CAS#: 152273-12-6

Description: U-93631 is a GABAA receptor antagonist. U-93631 causes rapid decay of gamma-aminobutyric acid-induced chloride currents in recombinant rat gamma-aminobutyric acid type A receptors.

Price and Availability

Size Price Shipping out time Quantity
50mg USD 250 2 Weeks
100mg USD 450 2 Weeks
200mg USD 750 2 Weeks
500mg USD 1650 2 Weeks
1g USD 2950 2 Weeks
2g USD 3950 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-01-19. Prices are subject to change without notice.

U93631, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received. Delivery time: overnight (USA/Canada); 3-5 days (worldwide).

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 530441
Name: U-93631
CAS#: 152273-12-6
Chemical Formula: C17H21N3O2
Exact Mass: 299.1634
Molecular Weight: 299.374
Elemental Analysis: C, 68.20; H, 7.07; N, 14.04; O, 10.69

Synonym: U93631, U-93631, U 93631

IUPAC/Chemical Name: 4,5-Dihydro-4,4-dimethyl-imidazo[1,5-a]quinoxaline-3-carboxylic acid 1,1-dimethylethyl ester


InChi Code: InChI=1S/C17H21N3O2/c1-16(2,3)22-15(21)13-14-17(4,5)19-11-8-6-7-9-12(11)20(14)10-18-13/h6-10,19H,1-5H3

SMILES Code: O=C(C1=C2N(C=N1)C3=C(C=CC=C3)NC2(C)C)OC(C)(C)C

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


1: Dillon GH, Im HK, Hamilton BJ, Carter DB, Gammill RB, Judge TM, Im WB. U-93631 causes rapid decay of gamma-aminobutyric acid-induced chloride currents in recombinant rat gamma-aminobutyric acid type A receptors. Mol Pharmacol. 1993 Oct;44(4):860-5. PubMed PMID: 8232235.

2: Bell-Horner CL, Dibas M, Huang RQ, Drewe JA, Dillon GH. Influence of subunit configuration on the interaction of picrotoxin-site ligands with recombinant GABA(A) receptors. Brain Res Mol Brain Res. 2000 Mar 10;76(1):47-55. PubMed PMID: 10719214.

3: Das P, Bell-Horner CL, Machu TK, Dillon GH. The GABA(A) receptor antagonist picrotoxin inhibits 5-hydroxytryptamine type 3A receptors. Neuropharmacology. 2003 Mar;44(4):431-8. PubMed PMID: 12646280.

4: Dillon GH, Im WB, Pregenzer JF, Carter DB, Hamilton BJ. [4-Dimethyl-3-t-butylcarboxyl-4,5-dihydro (1,5-a) quinoxaline] is a novel ligand to the picrotoxin site on GABAA receptors, and decreases single-channel open probability. J Pharmacol Exp Ther. 1995 Feb;272(2):597-603. PubMed PMID: 7531762.

5: Dillon GH, Im WB, Carter DB, McKinley DD. Enhancement by GABA of the association rate of picrotoxin and tert-butylbicyclophosphorothionate to the rat cloned alpha 1 beta 2 gamma 2 GABAA receptor subtype. Br J Pharmacol. 1995 Jun;115(3):539-45. PubMed PMID: 7582470; PubMed Central PMCID: PMC1908408.