Semax (HPLC-Verified / Batch COA)⁠

Semax Research Reagent | Regulatory Heptapeptide Analogue

Semax is a synthetic regulatory heptapeptide developed by the Institute of Molecular Genetics of the Russian Academy of Sciences. The peptide’s primary design is based on the molecular sequence of the adrenocorticotropic hormone fragment ACTH(4-10) (Met-Glu-His-Phe-Arg-Trp-Gly), fused with the tripeptide stabilization sequence Pro-Gly-Pro at its C-terminus. This structural enhancement shields the compound from rapid degradation by local proteolytic enzymes, extending its functional lifespan during in vitro testing models.

Unlike native ACTH, Semax completely lacks hormonal, adrenocorticotropic activity. Instead, it functions as a targeted neuro-regulatory asset. In preclinical laboratory settings, it is widely utilized to observe alterations in neurotrophin gene expression, neurotransmitter enzyme activity, and cellular responses to induced metabolic or ischemic stress without triggering system-wide endocrine side effects.

Batch-Specific HPLC Analysis & Validation

To secure the strict reproducibility required for advanced cellular bioassays, this range undergoes rigorous analytical control verification:

• HPLC Spectral Characterization: Every compound batch is subjected to High-Performance Liquid Chromatography to verify chemical purity parameters equal or exceed 99.0%.
• Mass Spectrometry Authentication: Verifies exact molecular mass metrics, confirming the pure 7-amino acid sequence and proper C-terminal attachment.
• Batch Certificate of Analysis (COA): Accessible analytical profiling safeguards testing matrices from unexpected batch-to-batch deviations.

Experimental Research Context & Mechanisms

Preclinical exploration utilizing Semax focuses on mapping several distinct cellular pathways:

• Neurotrophin Gene Expression: Investigating the up-regulation of Brain-Derived Neurotrophic Factor (BDNF) and Nerve Growth Factor (NGF) mRNA levels in hippocampal and cortical cellular matrices.
• Monoaminergic System Modulation: Mapping shifts in the turnover rates of serotonin (5-HT) and dopamine (DA) within isolated neuronal networks following exposure to the peptide reagent.
• Melanocortin Receptor Interaction: Assessing weak allosteric interactions with central melanocortin receptors (MC3 and MC4) to analyze their role in neuro-immunomodulatory cascades during active trials.

Laboratory Storage & Handling Protocols

To ensure maximum chemical longevity and protect the amino acid chain from premature structural breakdown, follow these preservation protocols:

• Lyophilized Protection: Unreconstituted vials must be stored long-term at -20°C inside a climate-controlled laboratory freezer. Keep environments fully desiccated and shielded from direct UV exposure.
• Reconstitution Calibration: Allow the vacuum-sealed glass vial to adjust fully to room temperature before inserting any liquid solvents to avoid interior condensation. Reconstitute with Sterile Bacteriostatic Water.
• Post-Solvent Management: Following fluid introduction, store the liquid solution strictly between 2°C and 6°C. Never shake or agitate the vial sharply; mix using a gentle, slow circular swirling pattern. Conclude all active laboratory models within 10 to 14 days of fluid introduction.