For Qualified Business & Research Customers Only
Pioneer/ Bio
Catalog/PB-116
PB-116Purity on request
Fig. · White to off-white lyophilized powder

Endocrine & Cell Repair Research Peptides

Leu-Enkephalin

C₂₈H₃₇N₅O₇ · 555.63 g/mol

Leu-enkephalin is an endogenous opioid pentapeptide generated from preproenkephalin A, with selectivity for the δ-opioid receptor (DOR) over the μ-opioid receptor. It is used as a reference standard in opioid-receptor binding assays and pain-signaling research.

Purity
On request
Quantity
Milligram, gram, or bulk quantities
Documentation
COA, HPLC, MS / LC-MS, SDS
Packaging
Bulk, non-branded, or private label
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Research Use Only · Buyer verification required

Specifications

Technical profile.

Catalog Number
PB-116
CAS Number
58822-25-6
Sequence
H-Tyr-Gly-Gly-Phe-Leu-OH
Molecular Formula
C₂₈H₃₇N₅O₇
Molecular Weight
555.63 g/mol
Purity (HPLC)
Available specifications confirmed with quotation
Appearance
White to off-white lyophilized powder
Vial Size
Confirmed with quotation
Storage
−20 °C (long-term) or 2–8 °C (working stock), sealed, desiccated, protected from light
Reconstitution
Water, bacteriostatic water, PBS, or dilute acetic acid buffer
Classification
Research Use Only

Documentation & Quality

What documentation may be available for Leu-Enkephalin.

Leu-Enkephalin·PB-116
Certificate of Analysis (COA)
Manufacturing partner or independent summary of identity, purity, and other release testing for a batch.
Pending Verified Documentation
HPLC Chromatogram
Chromatographic data supporting the purity result reported for a batch.
Pending Verified Documentation
Mass Spectrometry (MS) Report
Mass spectrometry data supporting molecular identity confirmation.
Pending Verified Documentation
Endotoxin Test
Endotoxin testing result, where applicable to the product and its intended use.
Pending Verified Documentation
Safety Data Sheet (SDS)
Handling, storage, and safety information for the material.
Pending Verified Documentation
Third-Party Laboratory Report
Testing performed by an independent laboratory, separate from the manufacturing partner's own QC.
Pending Verified Documentation

Documentation is lot-specific. The statuses above describe what may be available, not a specific batch result. Lot-specific documentation is available with quotation or order. Please contact our team to confirm current documentation availability.

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Bulk quantities, custom purity, documentation, and packaging options are reviewed for qualified business buyers.

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