Semax

Semax is a heptapeptide analog of the ACTH(4-7) fragment with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. Developed in Russia at the Institute of Molecular Genetics of the Russian Academy of Sciences, Semax was designed to retain the cognitive and neuroprotective properties associated with ACTH-derived peptides while eliminating their steroidogenic activity. It has been studied extensively in neuroscience research contexts.

Laboratory investigations have characterized Semax's interactions with the brain-derived neurotrophic factor (BDNF) signaling pathway. In rodent model studies, Semax exposure has been associated with increased BDNF and TrkB mRNA expression in hippocampal and cortical tissue, placing it within the growing field of neurotrophic factor research. Researchers have also examined its reported modulation of dopaminergic and serotonergic markers in preclinical neural models.

Semax is available for laboratory research as a lyophilized powder. Researchers who use intranasal delivery models find Semax of particular interest due to its small size and the research literature documenting its CNS-relevant pharmacokinetic properties in preclinical studies. All use is confined to laboratory research settings by trained scientific personnel.

Semax is in stock and available to buy online from Optimum ReGen Peptides — a real American research-peptide company with a physical storefront in Medford, Oregon, not an anonymous overseas dropshipper. Priced from $60, every order ships within two business days, flat $12.50 nationwide, in plain discreet packaging with tracking.

As your Semax supplier we back every batch with a third-party certificate of analysis and compound in a licensed US 503A pharmacy. Vials are supplied lyophilized at analytical purity for laboratory and research use only, not for human consumption.

Semax is administered to rodent models via intranasal instillation, intraperitoneal injection, or subcutaneous routes depending on the research design. Intranasal delivery models are of particular research interest given the compound's small molecular size and the desire to model CNS-targeted delivery approaches. Post-administration brain tissue is collected for BDNF ELISA, RT-PCR, and immunohistochemical analysis.

In vitro, Semax is applied to primary cortical neuron cultures and neural stem cell preparations. Researchers measure neuronal survival following oxidative stress or excitotoxic challenge using MTT/resazurin viability assays, caspase activation profiling, and mitochondrial membrane potential indicators. TrkB pathway phosphorylation status is assessed by Western blot.

Rodent behavioral studies complement biochemical endpoints. Researchers use standardized paradigms to quantify performance across treatment groups, and statistical analysis includes ANOVA with post-hoc correction. Semax's effect duration in behavioral models is a specific focus of pharmacodynamic research investigating the relationship between peripheral administration timing and CNS endpoint windows.