P-21 (PO21) 5mg

Synonyms / Designations: P-21, P021, Cerebrolysin-derived peptide, CNTF mimetic peptide
CAS Number: 1246751-68-7
Molecular Formula: C27H42N6O8
Molecular Weight: ~578.7 g/mol
Compound Classification: Synthetic neuropeptide; small molecule CNTF-derived compound
Purity: ≥ 99 % (HPLC, typical)
Appearance: White to off-white lyophilised powder
Pack Size: 5 mg
Storage: Desiccated, protected from light, stored at –20 °C
Solubility: Soluble in sterile water and buffered aqueous solutions

Description & Mechanism

P-21 (also designated P021) is a synthetic small molecule peptide derived from ciliary neurotrophic factor (CNTF). It is used in experimental research to investigate neurogenesis, cognitive function, and neurotrophic signalling pathways. P-21 is designed to mimic the neurotrophic properties of CNTF while possessing improved pharmacokinetic characteristics, including blood-brain barrier (BBB) permeability.

In biochemical and cellular research systems, P-21 has been shown to promote neurogenesis, particularly in the dentate gyrus region of the hippocampus. Experimental studies examine its effects on neural progenitor cell proliferation, synaptic plasticity, and cognitive function in various model systems. The compound’s ability to cross the blood-brain barrier makes it of particular interest for central nervous system research applications. Observed effects are dependent on experimental design, concentration, and model system.

Applications in Research

• Investigation of neurogenesis and neural progenitor cell proliferation
• Study of dentate gyrus neurogenesis and hippocampal function
• In vitro examination of CNTF signalling pathways
• Use as a molecular probe for neurotrophic factor research
• Blood-brain barrier permeability and CNS delivery studies
• Comparative analysis of neurotrophic peptides and small molecules

Handling, Reconstitution & Stability

• Weigh under dry conditions; compound is hygroscopic
• Reconstitute in sterile water or appropriate buffered aqueous solution
• Avoid vigorous agitation during dissolution
• Filter sterilize if required (0.22 µm) prior to use
• Aliquot and store reconstituted solutions at –20 °C or below
• Avoid repeated freeze–thaw cycles

Specifications Summary

Purity: ≥ 99 %
Appearance: White to off-white lyophilised powder
Compound Type: Synthetic neuropeptide; CNTF-derived small molecule
Molecular Weight: 578.7 g/mol
Solubility: Water, buffered aqueous solutions
Storage: –20 °C, desiccated, protected from light
Pack Size: 5 mg

Precautions & Notes

• Experimental behaviour of P-21 is influenced by cell type, concentration, and exposure duration
• Compound stability may be affected by pH, enzymatic activity, and buffer composition
• Appropriate controls are recommended to distinguish specific from non-specific effects
• Intended strictly for laboratory research use; not for human or veterinary application