NIBR 189

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Cat.No. 5203 - NIBR 189 | C21H21BrN2O3 | CAS No. 1599432-08-2
Description: Potent and selective EBI2 (GPR183) receptor antagonist
Chemical Name: (2E)-3-(4-Bromophenyl)-1-[4-4-methoxybenzoyl)-1-piperazinyl]-2-propene-1-one
Purity: ≥99% (HPLC)

Biological Activity

Potent and selective EBI2 (GPR183) receptor antagonist (IC50 values are 11 and 15 nM for human and mouse EBI2 receptors respectively). Exhibits selectivity for EBI2 over a panel of other receptors, enzymes and transporters. Blocks oxysterol-induced migration of U937 monocyte cells. Orally bioavailable.

Technical Data

M. Wt 429.31
Formula C21H21BrN2O3
Storage Store at +4°C
Purity ≥99% (HPLC)
CAS Number 1599432-08-2
PubChem ID 36295259
Smiles BrC1=CC=C(/C=C/C(N2CCN(C(C3=CC=C(OC)C=C3)=O)CC2)=O)C=C1

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 42.93 100

Preparing Stock Solutions

The following data is based on the product molecular weight 429.31. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 2.33 mL 11.65 mL 23.29 mL
5 mM 0.47 mL 2.33 mL 4.66 mL
10 mM 0.23 mL 1.16 mL 2.33 mL
50 mM 0.05 mL 0.23 mL 0.47 mL

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Product Datasheets

Safety Datasheet


References are publications that support the products' biological activity.

Gessier et al (2014) Identification and characterization of small molecule modulators of the Epstein-Barr virus-induced gene 2 (EBI2) receptor. J.Med.Chem. 57 3358 PMID: 24678947

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GPCR Product Listing

A collection of over 450 products for G protein-coupled receptors, the listing includes research tools for the study of:

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  • Frizzled Receptors
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