

Leuphasyl
Pentapeptide-18 Enkephalin Analog
Leuphasyl for sale — research-grade, third-party lab-tested to ≥99% purity. Pentapeptide-18 Enkephalin Analog. Buy Leuphasyl online with crypto, discreet worldwide shipping and a batch-matched COA.
Leuphasyl (Pentapeptide-18) is a synthetic enkephalin analog developed for cosmetic formulation research. It has been studied in preclinical models as a topical synergist to Argireline, with mechanism work examining its effect on presynaptic muscle contraction signaling pathways distinct from the SNARE-targeting class. For laboratory research use only.
Agonizes enkephalin-class opioid receptors on motor neurons, reducing cAMP and limiting calcium influx, which attenuates acetylcholine release at the neuromuscular junction.
For Research Use Only. Sold for in vitro laboratory research. Not for human or veterinary consumption. By purchasing, you confirm you are 21+ and a qualified research professional.
Pentapeptide-18 — synthetic enkephalin analog (Tyr-Gly-Gly-Phe-Leu).
Every batch of Leuphasyl ships with an independently conducted Certificate of Analysis by Janoshik Analytical or Bioviridian. The COA includes HPLC-MS chromatogram, mass spec confirmation, endotoxin levels, and heavy metals screening.
Batch number is printed on the vial label and included in your order confirmation email. Look it up at pepidyn.com/coa.
Leuphasyl FAQ
Is Leuphasyl a peptide?
Leuphasyl — Pentapeptide-18 Enkephalin Analog — is supplied as a research-grade peptide compound, lyophilized for laboratory study. See the molecular data on this page.
What is Leuphasyl used for in research?
Leuphasyl (Pentapeptide-18) is a synthetic enkephalin analog developed for cosmetic formulation research. It has been studied in preclinical models as a topical synergist to Argireline, with mechanism work examining its effect on presynaptic muscle contraction signaling pathways distinct from the SNARE-targeting class. For laboratory research use only.
Does Leuphasyl come with a COA?
Yes. Every batch ships with an independent Certificate of Analysis (HPLC-MS, mass-spec confirmation, endotoxin and heavy-metals screening). The batch number on the vial matches your order.
How is Leuphasyl stored?
Lyophilized Leuphasyl is stable at 2–8°C for 24+ months. Room-temperature transit does not affect potency. After reconstitution, store at 2–8°C and use within 30 days.







