XA5 Semax: High-Purity Neuropeptide for Neuroprotection & Cognitive Aging Research

Product Overview

XA5 is laboratory-grade Semax lyophilized peptide, offered in two standard packs: 5mg10 vials and 10mg10 vials, with HPLC-verified purity ≥99%. This short-chain neuropeptide is widely used in neuroscience labs to study cerebral blood flow, neuron repair, brain anti-aging, and ischemia recovery pathways. Formulated with a mild acetate buffer to keep a stable pH of 4.0–6.0, XA5 delivers consistent solubility and steady biological activity for long-term cell and animal trials.

Full Chemical Specification Table

Specification	Detailed Data
Product Name	XA5 (Semax)
CAS Number	80714-61-0
Molecular Formula	C₄₀H₅₄N₁₂O₁₄S
Molecular Weight	958.99 Da
HPLC Purity	≥99.0%
pH Range	4.0–6.0, acetate buffered sterile lyophilized powder
Appearance	Fine white lyophilized powder
Storage Requirement	Store sealed vials at -20°C, fully shielded from light and moisture
Available Sizes	5mg × 10 Vials / 10mg × 10 Vials

Key Benefits for Research Labs

1. Ultra-high single-component purity eliminates assay noise

Most low-grade Semax on the market carries peptide fragments and unknown impurities that create random errors in neuron survival testing. XA5 undergoes strict independent HPLC testing for every batch, so your cerebral perfusion and neuroprotection data stays clear and repeatable without extra purification steps.

2. Smooth full dissolution with minimal glass residue

The refined lyophilization process creates loose, free-flowing white powder. Gentle swirling dissolves the entire powder into transparent liquid, with almost no sticky residue stuck on vial inner walls. Researchers can recover nearly the full labeled 5mg or 10mg mass for precise low-dose neural injury screening.

3. Dual vial sizes fit all stages of neuroscience trials

The 5mg vial is perfect for small preliminary cell culture screening, while the 10mg option supports medium-to-large scale rodent in-vivo cognitive aging studies. Labs can pick the matching pack size to cut down unnecessary peptide waste during repeated testing cycles.

4. Long-term stable activity under proper frozen storage

When kept in opaque freezer boxes at constant -20°C away from light, unopened XA5 vials retain full neuroprotective potency for months. Long-term light exposure or room-temperature storage will trigger powder yellowing and drastically weaken its neuron repair effects. The gold flip cap maintains an airtight seal even after dozens of needle punctures for partial sampling.

5. Secure international shipping with zero breakage risk

Each bulk kit is packed with custom shock-absorbing foam dividers that separate every glass vial. For cross-border lab deliveries, packaging avoids collision damage, so researchers never receive cracked, leaking or contaminated vials that ruin valuable trial samples.

Main Research Application Scenarios

1. Primary cortical neuron cell culture for cerebral ischemia recovery research
2. Rodent model trials on age-related cognitive decline and memory function
3. In-vitro testing of peptide-driven cerebral blood vessel dilation
4. Comparative dose-response assays for neuroprotective neuropeptide studies
5. Academic anti-aging neural repair mechanism research

Real Lab User Feedback

I ran neuron culture experiments for brain injury recovery for over a year, switching to XA5 fixed all the messy random data from cheap impure Semax. The powder dissolves cleanly, and I don’t waste material on leftover residue stuck to vials. I only reconstitute one vial per week to preserve activity.
— Kian, Neuroscience Research Lab

Customer support can provide separate HPLC certification for every single vial in my pack, which fully meets my university lab’s strict audit standards. I use the 5mg packs for small pilot tests and 10mg for full mouse cognitive trials, the cross-batch consistency is outstanding.
— Lila, Academic Anti-Aging Research Team

Critical Storage & Operation Guidelines

1. Keep all unopened vials sealed in light-proof freezer bins at steady -20°C; never leave vials exposed under lab lamps or at room temperature for long periods.
2. Reconstitute powder with slow circular swirling only. Vigorous hard shaking breaks the short peptide chain and ruins assay accuracy.
3. After reconstitution, the diluted peptide liquid stays stable for up to 7 days under refrigeration as long as it is protected from UV light; discard cloudy or discolored working solution immediately.
4. Avoid repeated freeze-thaw cycles for partially used vials, as temperature fluctuations accelerate peptide degradation and reduce neuroprotective effects.

Final Conclusion

XA5 Semax stands out as a reliable single-source neuropeptide for neuroscience labs focused on brain repair and cognitive anti-aging research. Its certified ≥99% purity, flexible two-size packaging, stable buffered formulation and consistent cross-batch potency remove most common pain points researchers face with generic Semax products. Whether you run small cell screening or long-term animal cognitive trials, XA5 delivers steady, publishable experimental results with minimal material waste and extra lab prep work.