Storage & Stability
Semax Storage & Stability: Cold Chain, Half-Life & Shelf Life
3 min read•Published 2025-05-17•Quality Peptide USA Research
Semax is a synthetic heptapeptide analog of ACTH (4-10) developed in Russia and widely used in neurochemistry research. It is studied for influence on BDNF expression, monoaminergic signaling, and neuroprotective pathways in laboratory models.. This guide covers storage & stability for Semax — written for laboratory researchers sourcing US-synthesized peptides from Quality Peptide USA.
Lyophilized Shelf Life
Sealed lyophilized Semax stored at 2–8°C maintains potency through the expiration date listed on the certificate of analysis (typically 24–36 months from manufacture). Short transit exposure to room temperature during shipping does not meaningfully degrade lyophilized peptide — the vacuum-sealed solid form is highly stable. Once received, refrigerate promptly for long-term storage.
Reconstituted Solution Stability
Lyophilized: 2–8°C. Reconstituted: refrigerate, use within 30 days. Benzyl alcohol in bacteriostatic water provides bacteriostatic protection but does not extend chemical stability indefinitely. Investigators running multi-week protocols should plan their aliquoting strategy in advance.
Reported Research Half-Life
Reported in-vitro / preclinical half-life for Semax: Short systemic life; sustained CNS activity in research models Half-life depends on study system — plasma, tissue culture media, and intact-animal models all yield different effective windows.
Cold-Chain Shipping by Quality Peptide USA
Every order of Semax ships with insulated cold packaging for transit, dispatched from US facilities on the same day for orders placed before 2 PM EST. Tracking is provided on every shipment so research teams can plan receiving and cold-room storage.
Research Use Only
All content is for laboratory and in-vitro research contexts only. Not intended to diagnose, treat, or prevent any condition. Not for human or veterinary consumption.
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