LKT Labs

Biochemicals for Life Science Research

Leu-Enkephalin

Leu-Enkephalin

Product ID E5240
Cas No. 58822-25-6
Purity ≥95%
Product Unit SizeCostQuantityStock
25 mg $114.20 In stock
50 mg $180.30 In stock
125 mg $342.50 In stock
Bulk Quote

Quicklinks

Description

Leu-enkephalin is an endogenous opioid peptide that acts as an agonist at μ-opioid receptors (μORs) and δ-opioid receptors (δORs). Met-enkephalin exhibits neuromodulatory, antinociceptive/analgesic, and gastrointestinal motility modulating activities. Like other endogenous opioids, leu-enkephalin modulates expression of opioid receptors and plays a role in reward/reinforcement signaling. Leu-enkephalin increases pain thresholds in vivo and inhibits gastrointestinal muscle contractility in other animal models, inhibiting motility and gastric emptying.

Product Info

Cas No.

58822-25-6
Purity

≥95%
Formula

C28H37N5O7
Formula Wt.

555.62
IUPAC Name

2-[[2-[[2-[[2-[[2-amino-3-(4-hydroxyphenyl)propanoyl]amino]acetyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoic acid
Synonym

1-5-b-Neoendorphin (human) (9CI)
Solubility

Soluble in water (1 mg/mL).
Appearance

White to off white powder

Shipping and Storage

Store Temp

-20°C
Ship Temp

Ambient

Downloads

MSDS

E5240 MSDS PDF
Info Sheet

E5240 Info Sheet PDF

References

Popov M, Abu Hammad I, Bachar T, et al. Delivery of analgesic peptides to the brain by nano-sized bolaamphiphilic vesicles made of monolayer membranes. Eur J Pharm Biopharm. 2013 Nov;85(3 Pt A):381-9. PMID: 23791683.

Crayton R, Soller W, Mattiasson A, et al. Exogenously administered opioids contract the female rat intrinsic urethral sphincter in vivo. Neurourol Urodyn. 2010 Jun;29(5):777-82. PMID: 19899147.

Holzer P. Opioid receptors in the gastrointestinal tract. Regul Pept. 2009 Jun 5;155(1-3):11-7. PMID: 19345246.

Del Borgo MP, Blanchfield JT, Toth I. Internalisation of the mu-opioid receptor by endomorphin-1 and leu-enkephalin is dependant on aromatic amino acid residues. Bioorg Med Chem. 2008 Apr 15;16(8):4341-6. PMID: 18329886.

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