Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

View All Documentation

E5757

Sigma-Aldrich

Methionine Enkephalin-Arg-Phe acetate salt hydrate

≥97% (HPLC)

Synonym(s):

MERF, Tyr-Gly-Gly-Phe-Met-Arg-Phe

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C42H56N10O9S · xC2H4O2 · yH2O
Molecular Weight:
877.02 (anhydrous free base basis)
MDL number:
MFCD11044450
UNSPSC Code:
12352209
PubChem Substance ID:
329798997
NACRES:
NA.32

Quality Level

200

assay

≥97% (HPLC)

storage temp.

−20°C

SMILES string

O.CC(O)=O.CSCC[C@H](NC(=O)[C@H](Cc1ccccc1)NC(=O)CNC(=O)CNC(=O)[C@@H](N)Cc2ccc(O)cc2)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](Cc3ccccc3)C(O)=O

InChI

1S/C42H56N10O9S.C2H4O2.H2O/c1-62-20-18-32(39(58)50-31(13-8-19-46-42(44)45)38(57)52-34(41(60)61)23-27-11-6-3-7-12-27)51-40(59)33(22-26-9-4-2-5-10-26)49-36(55)25-47-35(54)24-48-37(56)30(43)21-28-14-16-29(53)17-15-28;1-2(3)4;/h2-7,9-12,14-17,30-34,53H,8,13,18-25,43H2,1H3,(H,47,54)(H,48,56)(H,49,55)(H,50,58)(H,51,59)(H,52,57)(H,60,61)(H4,44,45,46);1H3,(H,3,4);1H2/t30-,31-,32-,33-,34-;;/m0../s1

InChI key

WOWLRTTTXHINBL-AVEXNAMASA-N

Biochem/physiol Actions

Endogenous opioid heptapeptide that is an agonist at μ, δ, and κ receptors; also binds to σ2 receptors.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Amadou Guindo et al.
Parasites & vectors, 14(1), 82-82 (2021-01-30)
Since the late 1990s, malaria control programmes have relied extensively on mass bednet distribution and indoor residual spraying. Both interventions use pesticides and target mosquitoes coming indoors either to feed or to rest. Unfortunately, these intensified vector control campaigns have
Mauricio Diazgranados
PhytoKeys, (16), 1-52 (2012-12-13)
The páramos and high Andean forests of the tropical Andes are largely dominated by frailejones (Nomen nudum Cuatrec., Nomen nudum). These plants are ecologically and culturally essential for both ecosystems and local inhabitants. The frailejones have been studied for over
Charlotte R Feddersen et al.
BMC genomics, 20(1), 497-497 (2019-06-19)
The introduction of genome-wide shRNA and CRISPR libraries has facilitated cell-based screens to identify loss-of-function mutations associated with a phenotype of interest. Approaches to perform analogous gain-of-function screens are less common, although some reports have utilized arrayed viral expression libraries
David L Phillips et al.
Cornea, 34(11), 1383-1386 (2015-09-24)
To evaluate the outcome of the Boston type 1 keratoprosthesis (KPro-1) in eyes with iridocorneal endothelial syndromes and failed keratoplasties. A retrospective review was performed of every eye with a history of iridocorneal endothelial syndrome and a failed corneal transplant
Mohideen Abdul Kader et al.
Ophthalmic genetics, 38(3), 222-225 (2016-06-30)
To both characterize the clinical features of large primary open angle glaucoma (POAG) pedigree from a village in southern India and to investigate the genetic basis of their disease. Eighty-four members of a large pedigree received complete eye examinations including
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service