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Neurobiology Research
Midnight Sun Peptides offers a curated collection of cognitive and longevity research compounds covering two distinct research disciplines: neuropeptide signaling and cognitive pathway research, and cellular longevity mechanisms including telomere biology, mitochondrial function, and antioxidant pathway research.
Research Compounds — Third-Party Tested
Our cognitive research compounds include Semax and Adamax (ACTH-derived research compounds), Selank and Adalank (tuftsin-derived research compounds), DSIP (Delta Sleep-Inducing Peptide for neurobiology research), VIP (Vasoactive Intestinal Peptide for neurobiology research), and KLOW (a quad-compound blend combining KPV, GHK-Cu, BPC-157, and TB-500 for multi-pathway research).
Our longevity research compounds include Epithalon (a tetrapeptide studied in telomere research), MOTS-C (a mitochondrial-derived research compound), NAD+ (nicotinamide adenine dinucleotide studied in cellular metabolism research), and Glutathione (a research compound studied in cellular redox pathways).
Research Compounds for Cognitive Signaling & Longevity Pathways
The intersection of neuropeptide research and cellular longevity biology represents one of the fastest-growing areas in peptide science. Cognitive research compounds are studied across distinct neurological pathways, including BDNF-related signaling, GABAergic pathways, sleep-related research, and neuroregulatory mechanisms. Longevity research compounds are studied across cellular research areas including telomere biology, mitochondrial function, NAD+-dependent pathways, and cellular redox research.
Researchers studying cognitive signaling and cellular biology will find compounds across both research disciplines in this category. These compounds are studied across neurological pathways, mitochondrial function, telomere biology, and cellular signaling research.
Semax & Adamax — ACTH-Derived Research Compounds
Semax and Adamax are both derived from the ACTH(4-10) fragment of adrenocorticotropic hormone. Their primary research focus involves BDNF-related signaling pathways studied in laboratory models of neurological research. BDNF upregulation has been extensively studied in preclinical models of cognitive function, neuroprotection, and ischemic brain injury.
Semax — 10mg
ACTH(4-10) Synthetic Heptapeptide — Neurobiology Research Compound
Semax is a synthetic heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) derived from the ACTH(4-10) fragment. It is the most extensively studied ACTH-derived cognitive peptide, with a substantial body of Russian clinical and preclinical research behind it. In July 2026, Semax was included in the FDA Pharmacy Compounding Advisory Committee review for potential reclassification — reflecting its established evidence base. In laboratory research, Semax is studied for its BDNF upregulation in the hippocampus and cortex, dopamine signaling modulation without depletion, neurobiology research in ischemic models, and cognitive signaling pathways in laboratory research models.
Key Research Areas:
- BDNF pathway upregulation
- Neuroprotection in ischemic models
- Dopamine signaling research
- Working memory pathway studies
Available:
- Semax 10mg
Adamax (N-Acetyl Semax Amidate) — 10mg
N-Acetyl Modified Semax Analog — Enhanced Stability
Adamax is the N-acetyl amidate modified version of Semax — chemical modifications that improve its stability and alter its penetration characteristics compared to the parent compound. N-acetylation at the N-terminus and amidation at the C-terminus are common modifications used in peptide research to study how structural changes affect receptor interactions and bioavailability in laboratory models. Research with Adamax examines these structure-activity relationship differences in comparison to standard Semax, making it a complementary research tool for studying ACTH-derived peptide modifications.
Available:
- Adamax 10mg
Selank & Adalank — Tuftsin-Derived Neurobiology Research Compounds
Selank and Adalank are synthetic peptides derived from tuftsin — an endogenous tetrapeptide (Thr-Lys-Pro-Arg) derived from immunoglobulin G. Their primary research areas include GABAergic signaling, enkephalin-related pathways, and neurobiology research. Selank has completed Phase III clinical trials in Russia for generalized anxiety disorder (GAD) — the most advanced clinical evidence of any tuftsin-derived peptide.
Selank — 10mg
Tuftsin-Derived Synthetic Hexapeptide — Neurobiology Research Compound
Selank (Thr-Lys-Pro-Arg-Pro-Gly) is a synthetic hexapeptide that extends the tuftsin structure with additional stabilizing amino acids. In laboratory research, it is studied for its modulation of GABAergic neurotransmission (without receptor downregulation or dependence mechanisms observed with benzodiazepines), inhibition of enkephalin-degrading enzymes, serotonin and dopamine system interactions, and BDNF expression modulation.
Key Research Areas:
- GABAergic neurotransmission
- Enkephalin degradation inhibition
- Anxiety pathway modulation
- BDNF expression research
Available:
- Selank 10mg
Adalank (N-Acetyl Selank Amidate) — 30mg
N-Acetyl Modified Selank Analog
Available:
- Adalank 30mg
DSIP & VIP — Neuroregulatory Research Compounds
DSIP (Delta Sleep-Inducing Peptide) — 5mg | 10mg
Neuroregulatory Research Compound — Laboratory Research
DSIP (Delta Sleep-Inducing Peptide) is a 9-amino acid neuropeptide first identified in 1974 from rabbit brain extracts during slow-wave sleep. In laboratory research, it is studied for its role in neuroregulatory pathway research — specifically neurophysiological pathway research. Beyond sleep research, DSIP has been investigated for HPA-axis modulation, neuroendocrine signaling, and stress adaptation pathways. Available in 5mg and 10mg sizes for research protocol flexibility.
Key Research Areas:
- Delta wave sleep induction
- Neuroregulatory research
- Neuroendocrine pathway research
- Neuroendocrine signaling research
Available:
- DSIP 5mg and DSIP 10mg
VIP (Vasoactive Intestinal Peptide) —10mg
28-Amino Acid Research Compound — Multi-Pathway Signaling
VIP (Vasoactive Intestinal Peptide) is a 28-amino acid neuropeptide with widespread expression across the central and peripheral nervous systems, immune tissue, and gastrointestinal tract. In laboratory research, VIP is studied for its neuroregulatory signaling research properties, cytokine pathway research, circadian signaling research through suprachiasmatic nucleus signaling, and receptor pathway research. Its broad receptor distribution (VPAC1, VPAC2) makes it a research tool for studying neuropeptide signaling across multiple organ systems simultaneously.
Key Research Areas:
- Neuroprotective signaling
- Circadian rhythm and SCN research
- Anti-inflammatory cytokine modulation
- VPAC receptor interaction studies
Available:
- VIP 10mg
KLOW — Quad-Peptide Research Blend
KLOW (KPV + GHK-Cu + BPC-157 + TB-500) — 80mg
Pre-Combined Quad-Compound Blend — 80mg Total
KLOW is a proprietary pre-combined research blend containing four distinct peptide compounds: KPV (alpha-MSH tripeptide anti-inflammatory), GHK-Cu (copper tripeptide for cellular research), BPC-157 (gastric pentadecapeptide for tissue repair), and TB-500 (Thymosin Beta-4 fragment for cell migration). The KLOW blend is categorized in the Cognitive & Longevity section due to GHK-Cu’s relevance to cellular renewal and gene expression research — including studies on neurotrophin expression and brain-derived neuroprotective signaling.
The combination of four mechanistically distinct peptides in a single research compound allows scientists to study multi-pathway biological interactions simultaneously. Each component addresses a different aspect of cellular signaling: KPV addresses inflammatory pathways, GHK-Cu addresses copper-dependent cellular renewal signaling, BPC-157 addresses angiogenic and vascular repair pathways, and TB-500 addresses cytoskeletal reorganization and cell migration. Together they represent a multi-compound research approach to studying the intersection of repair, renewal, and regeneration biology.
Blend Components:
- KPV (pathway research)
- GHK-Cu (cellular research)
- BPC-157 (tissue research)
- TB-500 (cellular migration research)
Available:
- KLOW 80mg
Epithalon & MOTS-C — Telomere & Mitochondrial Research
Epithalon and MOTS-C represent two of the two research compounds studied across telomere and mitochondrial biology currently available. They target fundamentally different aspects of cellular aging — Epithalon addresses the telomere-telomerase axis of chromosomal aging while MOTS-C addresses the mitochondrial-metabolic axis of bioenergetic aging. Together they cover two of the most studied hallmarks of cellular senescence.
Epithalon — 50mg
Synthetic Tetrapeptide — Telomere Research Compound
Epithalon (also spelled Epitalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from Epithalamin — a polypeptide complex. It is the most extensively studied longevity peptide in Russian gerontological research, with preclinical and early human observational data spanning three decades. In laboratory research, Epithalon is studied for its ability to activate telomerase (hTERT) — the enzyme responsible for telomere length maintenance and chromosomal integrity across cell divisions.
Cell-line studies have demonstrated Epithalon’s ability to increase telomere length and telomerase activity in both normal and transformed cell lines. Additional research has examined its effects on pineal gland function, melatonin synthesis regulation, and circadian rhythm modulation — mechanisms linked to the aging of neuroendocrine regulatory systems.
Note: Epithalon and Epitalon are alternate spellings of the same peptide — our product page uses “Epithalon.”
Key Research Areas:
- Telomerase (hTERT) activation
- Telomere length modulation
- Pineal/melatonin signaling
- Circadian rhythm research
- Cellular senescence models
Available:
- Epithalon 50mg
MOTS-C — 40mg
Mitochondrial-Derived Research Compound — Mitochondrial Biology Research
MOTS-C (Mitochondrial Open Reading Frame of the Twelve S rRNA Type-C) is a 16-amino acid peptide encoded not in the nuclear genome, but in the mitochondrial genome — making it one of the few mitochondria-encoded peptides that has been successfully studied in laboratory research. MOTS-C was identified in 2015 and has since become a focal compound in mitochondrial aging research. In July 2026, MOTS-C (listed as MOTs-C) was included in the FDA PCAC review session, reflecting its growing scientific recognition.
In laboratory research, MOTS-C is studied for its role as a retrograde mitochondria-to-nucleus signaling molecule — it travels from the mitochondria to the nucleus where it activates stress response pathways. Research applications include metabolic homeostasis and metabolic signaling pathway studies, mitochondrial biogenesis signaling, exercise adaptation pathway research, and cellular metabolism research models. Its mitochondrial origin distinguishes it mechanistically from nuclear-genome-encoded peptides and makes it a unique research tool for studying inter-organelle communication in aging biology.
Key Research Areas:
- Mitochondria-to-nucleus retrograde signaling
- Metabolic homeostasis research
- Insulin sensitivity pathway studies
- Mitochondrial aging biology
Available:
- MOTS-C 40mg
NAD+ & Glutathione — Cellular Metabolism & Redox Research Compounds
NAD+ — 1000mg
Nicotinamide Adenine Dinucleotide — 1000mg
NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in all living cells and central to cellular energy metabolism. In aging research, NAD+ occupies a critical position: intracellular NAD+ levels decline significantly with age, and this decline is associated with dysfunction in sirtuins (NAD+-dependent deacetylases), PARP enzymes (DNA-related cellular research), and CD38 (cellular signaling research). Restoring NAD+ availability in research models is studied for its downstream effects on these aging-relevant enzymatic pathways.
Research with NAD+ focuses on its role as the substrate for sirtuin-mediated gene expression regulation (SIRT1-7), PARP1/2 activation in DNA-related cellular research signaling, CD38 receptor-mediated calcium signaling, and mitochondrial pathway research through PGC-1α pathway research. NAD+ is available in our 1000mg research format, suitable for both in vitro and in vivo preclinical research protocols investigating NAD+ pathway research.
Key Research Areas:
- Sirtuin (SIRT1-7) pathway research
- PARP-mediated DNA repair signaling
- Mitochondrial biogenesis (PGC-1α)
- Age-related NAD+ decline biology
Available:
- NAD+ 1000mg
Glutathione — 1500mg
Tripeptide Cellular Redox Research Compound — GSH
Glutathione (γ-glutamyl-cysteinyl-glycine, GSH) is the most abundant intracellular antioxidant in mammalian cells and is considered a cellular redox research compound of cellular biology. It exists in reduced (GSH) and oxidized (GSSG) forms, and the GSH/GSSG ratio is used as a biomarker of cellular oxidative stress in research models. Glutathione participates in direct reactive oxygen species scavenging, regeneration of other antioxidants (Vitamins C and E), xenobiotic detoxification through glutathione-S-transferase reactions, and immune cell signaling.
In aging and longevity research, glutathione levels decline with age and in oxidative stress models. Research with exogenous glutathione examines its uptake in various cell types, its effect on the cellular redox environment, and its interactions with NAD+ and other longevity-associated pathways. Our 1500mg research format provides sufficient material for extended oxidative stress and antioxidant pathway research protocols.
Key Research Areas:
- Cellular redox environment research
- ROS scavenging pathway studies
- cellular redox pathway research (glutathione-S-transferase)
- Age-related antioxidant decline models
Available:
- Glutathione 1500mg
Why Purity Matters in Cognitive & Cellular Research
Cognitive and longevity research involves studying subtle receptor interactions, neurotrophin expression changes, and long-term cellular aging markers. Compound purity is especially critical in this research context: neuropeptide receptor pharmacology studies require precise concentration delivery, and telomere length assays are sensitive to confounding variables from impure compounds.
Every cognitive and longevity research peptide sold by Midnight Sun Peptides is independently tested by an accredited third-party laboratory using HPLC purity analysis and mass spectrometry identity confirmation. Batch-specific Certificates of Analysis are available on every product page — not generic documentation, but the actual laboratory test report for your production lot. This traceability standard is essential for researchers maintaining compound sourcing records in longitudinal aging or neuroprotection research.
- HPLC Purity Analysis — confirms exact purity percentage for every production batch
- Mass Spectrometry Identity Confirmation — verifies compound identity, not just purity
- Batch-Specific COA — actual test report for your lot, with batch number, purity %, MW, and lab name
Frequently Asked Questions
What is the difference between Semax and Selank?
Semax and Selank are derived from different parent peptides and act through different primary mechanisms. Semax is derived from ACTH(4-10) and its primary studied mechanism is BDNF (Brain-Derived Neurotrophic Factor) upregulation — it is considered a cognitive research, BDNF-upregulating compound studied for neurobiology research and cognitive signaling enhancement. Selank is derived from tuftsin and primarily modulates GABAergic neurotransmission — it is considered an neuroregulatory research compound studied for neuroregulatory pathway research without sedation or dependence mechanisms. Adamax and Adalank are N-acetyl amidate modifications of Semax and Selank respectively, studied for structure-activity relationship differences compared to their parent compounds.
What is Epithalon and what is it studied for?
Epithalon (Ala-Glu-Asp-Gly) is a synthetic tetrapeptide derived from Epithalamin, a polypeptide complex. It is considered the flagship longevity research peptide because of its studied ability to activate telomerase (hTERT) — the enzyme responsible for maintaining telomere length across cell divisions. Telomere shortening is one of the recognized hallmarks of cellular aging; telomere length is used as a biomarker of biological aging in research. In addition to telomere research, Epithalon is studied for pineal gland signaling, melatonin synthesis regulation, and circadian rhythm modulation.
What makes MOTS-C unique among mitochondrial research compounds?
MOTS-C is unique because it is one of the few peptides encoded in the mitochondrial genome rather than the nuclear genome — making it a mitochondrial-derived peptide (MDP) rather than a nuclear-encoded one. In research models, it acts as a retrograde signaling molecule — traveling from the mitochondria to the nucleus where it activates stress response and metabolic adaptation pathways. This inter-organelle communication role is distinct from all other peptides in this category. MOTS-C was included in the potential reclassification, reflecting its growing recognition in the research community.
Why are DSIP variants available in 5mg and 10mg?
DSIP is available in two sizes — 5mg and 10mg — on the same product page via a dropdown size selector. The two sizes provide research protocol flexibility: smaller 5mg quantities for pilot studies, dose-response experiments, or low-concentration research designs; larger 10mg quantities for extended protocols or comparative studies requiring consistent compound sourcing across multiple experimental phases. Both sizes are independently tested to the same >99% purity standard with batch-specific COA documentation.
What purity level are these cognitive and cellular research compounds?
All cognitive and longevity research peptides sold by Midnight Sun Peptides are independently verified at greater than 99% purity using HPLC purity analysis and mass spectrometry identity confirmation. Testing is performed by an accredited third-party laboratory. Batch-specific Certificates of Analysis are available on every product page — these are the actual laboratory test results for your specific production lot, not generic historical documentation.
Research Use Only Disclaimer:
All products on this page are sold strictly for laboratory and controlled scientific research purposes only. These compounds are not approved by the FDA or any regulatory authority for human or veterinary use. They are not intended for consumption, therapeutic application, or administration to humans or animals under any circumstances. All use must remain within qualified laboratory research settings.
