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E5757

Sigma-Aldrich

Methionine Enkephalin-Arg-Phe acetate salt hydrate

≥97% (HPLC)

Synonym(s):

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

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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 Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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’.

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