Molecular Characteristics
Complete Specifications
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CAS Registry Number: 80714-61-0
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PubChem CID: Not available
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Peptide Classification: Synthetic heptapeptide (ACTH(4–10) analog)
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Molecular Formula: C₃₇H₅₁N₉O₁₀
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Molecular Weight: ~813.86 Da
Structural Composition
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Amino Acid Sequence:
Met-Glu-His-Phe-Pro-Gly-Pro -
Length: 7 amino acids
Physical Properties
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Appearance: White to off-white lyophilized powder
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Solubility: Water, bacteriostatic water, buffered aqueous solutions (e.g., PBS)
Structural & Stability Notes
Semax is a synthetic heptapeptide derived from the ACTH(4–10) fragment sequence. Its short linear structure supports efficient aqueous solubility and laboratory handling. As a small peptide, it remains susceptible to enzymatic degradation in biological systems; therefore, lyophilized storage under cold, dry conditions is recommended. Protection from moisture, light exposure, and repeated freeze–thaw cycles helps preserve structural integrity and maintain analytical consistency during research applications.




