Description
SEMAX is a synthetic peptide that has gained attention in in vitro research due to its unique properties and origin from ACTH. It has been widely utilized in studies focused on neuroprotection and biochemical signaling pathways, making it an essential tool for advanced research laboratories. Its optimized sequence ensures high consistency and purity, vital for reproducible experimental results.
Developed through extensive peptide engineering, SEMAX is known for its stability and solubility under standard research conditions. Rigorous quality control ensures that each batch meets acceptable quality levels for in vitro applications. SEMAX’s reputation in experimental neurobiological research highlights its utility across various areas of interest, such as neurotransmitter regulation and oxidative stress studies.
Lone Star Research provides SEMAX as a lyophilized powder to guarantee its long-term stability during storage and transport. The chemical is prepared under controlled laboratory conditions and packaged to maintain its integrity until it reaches your research facility. Proper handling and storage protocols are recommended to ensure its efficacy in ongoing research applications.
This compound is intended solely for research use and is classified as RUO (Research Use Only). Labs ordering SEMAX should refer to our terms and conditions for detailed guidelines regarding its use.
| Property | Detail |
| Chemical | Semax |
| Synonyms | Met-Glu-His-Phe-Pro-Gly-Pro |
| Sequence | Met-Glu-His-Phe-Pro-Gly-Pro |
| Molecular Weight | 813.9 g/mol |
| Formula | C37H51N9O10 |
| CAS Number | 80714-61-0 |
| Solid Solubility | Soluble in sterile water |
| Storage | Store at -20°C |
| PubChem CID | 9572359 |


Certificate of Analysis
Lone Star Research ensures the highest quality of Semax through rigorous analytical testing. The Certificate of Analysis (COA) verifies the compound’s integrity and reliability for research purposes.
| Parameter | Detail | Result |
| Lot number | ☑ VALID | |
| MFG Date | ☑ VALID | |
| Expiration Date | ☑ VALID | |
| Appearance | Lyophilized powder | ☑ PASS |
| Solubility | Clear in sterile water | ☑ PASS |
| HPLC | Purity ≥98% | ☑ 98.6% |
| Amino Acid Analysis | Met, Glu, His, Phe, Pro, Gly, Pro | ☑ PASS |
| Mass Spectrum | 813.9 g/mol | ☑ 813.91 g/mol |
Storage Protocols
Proper storage is critical to maintaining the stability and efficacy of Semax. Exposure to suboptimal conditions can lead to degradation and reduced performance in research applications. Consistent storage conditions are recommended to preserve product integrity.
| Storage Condition | Duration |
| Frozen (-20°C) | Up to 3 years |
| Refrigerated (4°C) | Up to 3 months |
| After Reconstitution | Use within 28 days at 4°C |
- Store in a tightly sealed container to avoid contamination.
- Protect from light to maintain chemical stability.
- Avoid repeated freeze-thaw cycles to prevent degradation.

Lone Star Research Storage Protocols:
Lone Star Research employs advanced storage solutions, including medical-grade freezers and refrigeration systems. Backup generators and continuous temperature monitoring ensure product stability at all times. Temperature logs are recorded to the cloud and audited quarterly to maintain high standards.
Lonestar Reconstitution Protocols:
Semax is reconstituted under stringent conditions, following sterility guidelines in controlled environments with negative pressure. Reconstituted chemicals are non-returnable due to their sensitive handling requirements.


Lyophilized Powder (Standard)
A freeze-dried, stable form of the chemical, ideal for long-term storage. Typically stable for up to 2 years when stored properly. Keep frozen at -20°C to maintain stability.
Reconstituted (Ready-to-Use) A pre-prepared, liquid form reconstituted with up to 2.5 mL of bacteriostatic water for convenience. Use within 28 days when stored at 4°C after reconstitution.
Signs of Degradation (After Reconstitution):
- Formation of particulates or cloudiness.
- Loss of clarity or discoloration.
- Reduced bioactivity in research applications.
Proper handling and storage are essential to maintain the efficacy of most peptides. Lone Star Research is not responsible for mishandling or temperature fluctuations after the product leaves our facility. Please see our Return policy for more details.

Free FedEx 2 Day Shipping
All research chemicals are shipped free of charge via FedEx 2nd Day Air, using thermally regulated packaging with cold packs to maintain stability during transit. If reconstitution is requested, adherence to temperature requirements is critical to preserve chemical potency. Improper handling may compromise the compound’s efficacy. We only ship Monday – Wednesday to ensure chemicals arrive to your lab in good condition.
| Order by 11pm Monday | Ships Tuesday |
| Order by 11pm Tuesday | Ships Wednesday |
| Order anytime Wednesday – Sunday | Ships following Monday |









