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Semax
Semax
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All products are handled with strict quality standards to ensure consistent research-grade excellence.

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Third-party
Tested

Our products are verified by independent third party laboratories to meet quality standards.

Batch & Lot
Tracking

All product batches and lots are assigned unique identifiers and tied to publicly posted lab reports.

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Semax

$34.99

Purchase & earn 35 points!
Orders processed within 24 hours · Free shipping on orders over $250

Discount per Quantity

QuantityDiscountPrice
5 - 105%$33.24
11 - 2010%$31.49
21+15%$29.74

Rigorous Third-Party Testing

Every batch of our research chemicals and peptides undergoes
third-party testing.

Disclaimer: This product is intended solely for laboratory research purposes. It is not suitable for consumption by humans, nor for medical, veterinary, or household purposes. Kindly review our Terms & Conditions before making a purchase.

Always quality-tested, verified with third-party COAs

At every step, we prioritize quality by conducting rigorous third-party testing on all our products. These tests focus on five key characteristics — identity, purity, sterility, endotoxin levels, and heavy metal content — ensuring that each product meets the highest standards of quality, with independent third-party Certificates of Analysis (COAs) to verify our commitment to excellence.

Identity Test

Identity testing ensures that the product contains the correct ingredient as labeled, verifying its authenticity and matching it to established reference standards.

Purity Test

Purity and concentration testing verifies that the ingredient is present in the correct amount, with a purity of 99% or higher to meet stringent quality standards.

Sterility Test

Sterility testing ensures that the product is completely free from bacteria, fungi, and other microorganisms.

Endotoxin Test

Endotoxicity testing specifically detects and quantifies lipopolysaccharides (LPS), components of bacterial cell walls, to ensure the product is free from endotoxins.

Heavy Metals Test

Heavy metals testing ensures that the product is free of heavy metals such as lead, arsenic, mercury, cadmium, and other heavy metals.

Identity Test

Identity testing ensures that the product contains the correct ingredient as labeled, verifying its authenticity and matching it to established reference standards.

Purity Test

Purity and concentration testing verifies that the ingredient is present in the correct amount, with a purity of 99% or higher to meet stringent quality standards.

Sterility Test

Sterility testing ensures that the product is completely free from bacteria, fungi, and other microorganisms.

Endotoxin Test

Endotoxicity testing specifically detects and quantifies lipopolysaccharides (LPS), components of bacterial cell walls, to ensure the product is free from endotoxins.

Heavy Metals Test

Heavy metals testing ensures that the product is free of heavy metals such as lead, arsenic, mercury, cadmium, and other heavy metals.

*Disclaimer: This product is intended solely for laboratory research purposes. It is not suitable for consumption by humans, nor for medical, veterinary, or household purposes.Kindly review our Terms & Conditions before making a purchase.

Order Semax 5mg from Eternal Peptides. High-purity Semax verified by third-party testing with Certificates of Analysis available. Competitive prices, secure discreet shipping, 24/7 support. Sold for research use only. 

Semax Peptide Characteristics

Property Details
Name Semax (Heptapeptide ACTH(4-10) analogue)
Sequence Met-Glu-His-Phe-Pro-Gly-Pro (MEHFPGP)
Molecular Formula C₃₇H₅₁N₉O₁₀S
Molecular Weight 813.9 g/mol
PubChem CID 9811102
Product Form Lyophilized powder in 20 mg vials
Purity ≥99%, verified via third-party laboratory analysis with lot-specific Certificates of Analysis (COA) available
Solubility Highly soluble in sterile water, saline solution, and other laboratory buffers; recommended reconstitution at 1-2 mg/mL for optimal stability
Storage Store lyophilized powder at -20°C; reconstituted solution stable at 36-46°F (2-8°C) for up to 14 days or -20°C for extended storage
Appearance White to off-white lyophilized powder
pH Stability Stable at physiological pH (6.5-7.5)

COA and Quality Assurance

Eternal Peptides provides a lot-specific Certificate of Analysis for every Semax lot. Each COA documents peptide identity by HPLC and mass spectrometry, purity, sterility (USP <71>), and endotoxin levels (LAL, typically <1.0 EU/mg), plus lot-specific storage guidance. Testing is conducted by independent third-party laboratories, with results on the Lab Tests page.

Handling and Storage

Store lyophilized Semax at -20°C in a tightly sealed vial, protected from light and moisture to help preserve peptide stability. If preparation of a working solution is required, use an appropriate sterile reconstitution solution or compatible laboratory buffer in accordance with established laboratory protocols. Prepared solutions are typically maintained under refrigerated conditions for short-term laboratory use or stored frozen in aliquots for longer-term preservation, depending on institutional procedures. Always follow applicable institutional biosafety, laboratory handling, and disposal requirements.

Legal and Regulatory Disclaimer

Semax is strictly for laboratory research purposes only and is not approved by the FDA or any regulatory authority for human consumption, veterinary use, clinical administration, therapeutic applications, or diagnostic procedures. Its safety and efficacy in humans have not been established. Purchasers are solely responsible for compliance with all applicable regulations governing research peptides and institutional policies.

Dr. Sony Sherpa, MBBS, MD

Medical author

Dr. Sony Sherpa holds a medical degree (MBBS, MD) and writes on peptide characterisation, chemical and structural data, and laboratory handling and storage. Her focus is on accuracy and fidelity to current published research, with all content presented for laboratory research use only. Read full profile

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