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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

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Certificates of Analysis (COA)

Lot/Batch Number
124F58156
089H59061
124F58154
096H5800
096H58002

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