BIM 23127

Discontinued Product

Unfortunately BIM 23127 (Cat. No. 1839) has been withdrawn from sale for commercial reasons.
Cat.No. 1839 - BIM 23127 | D-Nal-Cys-Tyr-D-Trp-Orn-Val-Cys-Nal-NH2 (Disulfide bridge: 2 - 7) | CAS No. 160161-61-5
Description: NMB receptor antagonist. Also U-II receptor antagonist

Biological Activity

Neuromedin B receptor (NMB-R, BB1) antagonist (Ki values are 20.9 and > 10000 nM for NMB and gastrin-releasing peptide receptors respectively). Selectively blocks NMB-suppressed glucose intake in vivo. Also a potent urotensin-II receptor antagonist (pA2 = 7.5 - 7.7) and displays affinity for somatostatin and μ-opioid receptors.

Technical Data

M. Wt 1178.43
Formula C62H71N11O9S2

(Modifications: X-1 = D-Nal, Trp-3 = D-Trp, X-5 = Orn, X-8 = Nal & C-terminal amide, Disulfide bridge between 2 - 7)

Storage Desiccate at -20°C
CAS Number 160161-61-5
Smiles [H]N[C@H](CC1=CC2=CC=CC=C2C=C1)C(=O)N[C@H]1CSSC[C@H](NC(=O)[C@@H](NC(=O)[C@H](CCCN)NC(=O)[C@@H](CC2=CNC3=C2C=CC=C3)NC(=O)[C@H](CC2=CC=C(O)C=C2)NC1=O)C(C)C)C(=O)N[C@H](CC1=CC2=CC=CC=C2C=C1)C(N)=O

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.

Preparing Stock Solutions

The following data is based on the product molecular weight 1178.43. 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.

Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 0.85 mL 4.24 mL 8.49 mL
5 mM 0.17 mL 0.85 mL 1.7 mL
10 mM 0.08 mL 0.42 mL 0.85 mL
50 mM 0.02 mL 0.08 mL 0.17 mL

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Product Datasheets

Certificate of Analysis / Product Datasheet
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Safety Datasheet


References are publications that support the products' biological activity.

Herold et al (2003) The neuromedin B receptor antagonist, BIM-23127, is a potent antagonist at human and rat urotensin-II receptors. Br.J.Pharmacol. 139 203 PMID: 12770925

Ladenheim et al (1994) Blockade of feeding inhibition by neuromedin B using a selective receptor antagonist. Eur.J.Pharmacol. 271 R7 PMID: 7698191

Santo-Yamada et al (2003) Blockade of bombesin-like peptide receptors impairs inhibitory avoidance learning in mice. Neurosci.Lett. 340 65 PMID: 12648760

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Keywords: BIM 23127, supplier, U-II, receptor, antagonists, NMB, UT, Receptors, Urotensin-II, BB1, NMB-Preferring, Neuromedin, B-Preferring, Bombesin, BIM23127, Bombesin, Receptors, Urotensin-II, Receptors, Bombesin, Receptors, Tocris Bioscience

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