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PE-22-28 – 10mg Peptide

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PE-22-28 (10mg) — Research Compound

PE-22-28 is a synthetic peptide derived from spadin, studied for its role as a selective blocker of the TREK-1 potassium channel. TREK-1 is primarily expressed in the brain, particularly in areas associated with mood and cognitive function, such as the hippocampus. Researchers investigate PE-22-28 for its potential to act as a rapid-onset antidepressant by modulating neuronal excitability and stimulating neurogenesis without the lag time associated with traditional serotonergic therapies.

Findings from early-stage clinical trials have reported:

• Rapid improvements in mood-related behavioral markers observed within four days in experimental models.
• Significant increases in the levels of Brain-Derived Neurotrophic Factor (BDNF) reported in hippocampal research.
• Enhanced rates of neurogenesis (new neuron growth) noted across multiple study cohorts.
• No observed impact on cardiovascular markers or traditional potassium channel side effects in research studies.

Researchers study PE-22-28 to investigate the role of TREK-1 signaling in the regulation of mental health and neuroplasticity. Its ability to trigger neurogenic pathways rapidly makes it a specialized tool for understanding the biological response to acute stress. This compound is a primary focus for research into the next generation of fast-acting neurotrophic agents and the mechanisms of neuronal resilience.

Available Formats:
This compound is available as a vial of lyophilised powder, or can be ordered in a disposable pen, a reusable pen, or a cartridge for an existing reusable pen system.

Used solely for in vitro experiments and cannot be:

  • Used in clinical trials involving humans
  • Administered to humans as part of an experiment or investigation
  • Supplied to another party for human investigational use

 

IDENTIFICATION
Product Name PE-22-28 10 mg
Catalogue Number RP-PE2228-01
CAS Number 1801959-12-5
Molecular Weight (g/mol) 840.9 g/mol
Molecular Formula C36H60N10O11
Peptide Sequence Endorphin fragment (aa 22–28)
PHYSICAL AND CHEMICAL PROPERTIES
Active Ingredient PE-22-28
Appearance White to off-white lyophilised powder
Melting Point Not applicable (decomposes before melting)
ANALYTICAL AND QUALITY CONTROL
Mass Spectrum Conforms to specification
Structural Confirmation Consistent with theoretical structure / sequence
RESEARCH USE AND SAFETY
Caution Handle using appropriate PPE and in compliance with relevant laboratory safety standards.
Intended Use For laboratory research use only. Not for human or veterinary use.
Hazard Classification Not classified as hazardous under GHS for research quantities
STORAGE, HANDLING AND STABILITY
Storage Temperature, Opened -20 °C, minimise freeze–thaw cycles
Storage Temperature, Unopened -20 °C recommended for long-term storage
Shelf Life 2 years unopened under recommended conditions
Reconstitution Stability Stable for up to 28 days at 2–8 °C in aqueous solution under sterile conditions

Certificate of Analysis – PE-22-28 (99% Purity Verified)

COMPOUND IDENTIFICATION
Product Name PE-22-28
Batch / Reference ID PE300901
Sample Form White powder in glass vial
ANALYTICAL RESULTS
Chemical Purity 99% (Verified)
Measured Content 10.11 mg (± 0.05 mg)
Test Method HPLC (High-Performance Liquid Chromatography)
LABORATORY TESTING INFORMATION
Analysis Period 06 Feb 2026 – 10 Feb 2026
Laboratory Order # 100012234
QUALITY ASSURANCE
Quality Testing Standards All River Peptides products undergo batch-level laboratory analysis to verify compound identity and confirm purity levels.
Learn more on our Quality Testing & Purity Verification page.

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