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

MedKoo CAT#: 531353

CAS#: 726174-00-1

Description: A-381393 is a potent and selective agonist of the dopamine D4 receptor.

Price and Availability




A-381393 is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 531353
Name: A-381393
CAS#: 726174-00-1
Chemical Formula: C20H24N4
Exact Mass: 320.2001
Molecular Weight: 320.44
Elemental Analysis: C, 74.97; H, 7.55; N, 17.48

Synonym: A-381393

IUPAC/Chemical Name: 2-[[4-(3,4-dimethylphenyl)piperazin-1-yl]methyl]-1H-benzimidazole


InChi Code: InChI=1S/C20H24N4/c1-15-7-8-17(13-16(15)2)24-11-9-23(10-12-24)14-20-21-18-5-3-4-6-19(18)22-20/h3-8,13H,9-12,14H2,1-2H3,(H,21,22)


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).

Harmonized System Code:


1: Marona-Lewicka D, Nichols DE. WAY 100635 produces discriminative stimulus effects in rats mediated by dopamine D(4) receptor activation. Behav Pharmacol. 2009 Feb;20(1):114-8. doi: 10.1097/FBP.0b013e3283242f1a. PubMed PMID: 19179855.

2: Marona-Lewicka D, Chemel BR, Nichols DE. Dopamine D4 receptor involvement in the discriminative stimulus effects in rats of LSD, but not the phenethylamine hallucinogen DOI. Psychopharmacology (Berl). 2009 Apr;203(2):265-77. doi: 10.1007/s00213-008-1238-0. PubMed PMID: 18604600.

3: Bitner RS, Nikkel AL, Otte S, Martino B, Barlow EH, Bhatia P, Stewart AO, Brioni JD, Decker MW, Moreland RB. Dopamine D4 receptor signaling in the rat paraventricular hypothalamic nucleus: Evidence of natural coupling involving immediate early gene induction and mitogen activated protein kinase phosphorylation. Neuropharmacology. 2006 Apr;50(5):521-31. PubMed PMID: 16324724.

4: Nakane M, Cowart MD, Hsieh GC, Miller L, Uchic ME, Chang R, Terranova MA, Donnelly-Roberts DL, Namovic MT, Miller TR, Wetter JM, Marsh K, Stewart AO, Brioni JD, Moreland RB. 2-[4-(3,4-Dimethylphenyl)piperazin-1-ylmethyl]-1H benzoimidazole (A-381393), a selective dopamine D4 receptor antagonist. Neuropharmacology. 2005 Jul;49(1):112-21. PubMed PMID: 15992586.