Discontinued Product

Endomorphin-1 (Cat. No. 1055) has been withdrawn from sale for commercial reasons.
Description: Potent and selective μ agonist
Purity: ≥95% (HPLC)
Citations (3)
Literature (2)

Biological Activity for Endomorphin-1

Endomorphin-1 is a endogenous peptide with an exceptionally high affinity (Ki = 360 pM) and selectivity for μ opioid receptors (4000- and 15000-fold preference over δ and κ respectively).

Technical Data for Endomorphin-1

M. Wt 610.67
Formula C34H38N6O5
Sequence YPWF

(Modification: Phe-4 = C-terminal amide)

Storage Store at -20°C
Purity ≥95% (HPLC)
CAS Number 189388-22-5
PubChem ID 5311080
Smiles [H]N[C@@H](CC1=CC=C(O)C=C1)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC1=CNC2=C1C=CC=C2)C(=O)N[C@@H](CC1=CC=CC=C1)C(N)=O

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

Tocris products are intended for laboratory research use only, unless stated otherwise.

Product Datasheets for Endomorphin-1

Certificate of Analysis / Product Datasheet
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References for Endomorphin-1

References are publications that support the biological activity of the product.

Goldberg et al (1998) Pharmacological characterization of endomorphin-1 and endomorphin-2 in mouse brain. J.Pharmacol.Exp.Ther. 286 1007 PMID: 9694962

Harrison et al (1998) Differential effects of endomorphin-1, endomorphin-2, and tyr-W-MIF-1 on activation of G-proteins in SH-SY5Y human neuroblastoma membranes. Peptides 19 749 PMID: 9622031

Kakizawa et al (1998) Parallel stimulations of in vitro and in situ [35S]GTPγS binding by endomorphin 1 and DAMGO in mouse brains. Peptides 19 755 PMID: 9622032

Zadina et al (1997) A potent and selective endogenous agonist for the μ-opiate receptor. Nature 386 499 PMID: 9087409

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Keywords: Endomorphin-1, Endomorphin-1 supplier, Potent, selective, μ-opioid, mu-opioid, agonists, MOP, Receptors, OP3, Mu, Opioid, 1055, Tocris Bioscience

3 Citations for Endomorphin-1

Citations are publications that use Tocris products. Selected citations for Endomorphin-1 include:

Hauser et al (2018) Pharmacogenomics of GPCR Drug Targets. Cell 172 41 PMID: 29249361

Dortch-Carnes and Russell (2007) Morphine-stimulated nitric oxide release in rabbit aqueous humor. Am J Physiol Endocrinol Metab 84 185 PMID: 17094965

Garzón et al (2004) RGSZ1 and GAIP regulate mu- but not delta-opioid receptors in mouse CNS: role in tachyphylaxis and acute tolerance. Neuropsychopharmacology 29 1091 PMID: 14997173

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Literature in this Area

Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.

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