Research-Grade Compound Science Hub
Compound comparisons, research use cases, peptide stacks, and study indexes, a structured reference for researchers making informed procurement decisions.
What's in the Library
Four research reference sections covering every angle of peptide compound science.
Compound Comparisons
Side-by-side research analysis of every compound pair: mechanisms, research areas, half-lives, and key differences.
Research Use Cases
Peptide science organized by research objective: longevity, skin and collagen, cognitive, metabolic, recovery, and immune.
Peptide Stacks
Multi-compound research protocols organized by objective, from the Wolverine Stack to longevity panels.
Study Index
Curated PubMed study references organized by compound, with year, journal, and key finding at a glance.
Delivery Methods
How delivery routes have been examined in published animal models and in vitro systems. Subcutaneous, oral, intranasal, topical, IV, IP, and stability pages.
Compound Comparisons
Side-by-side research analysis. Select any pair to explore mechanisms, research areas, and key differences.
BPC-157 vs TB-500
BPC-157 and TB-500 are among the most widely studied tissue-repair peptides in preclinical research. Both appear in overlapping research con…
GHK-Cu vs Epithalon
GHK-Cu and Epithalon represent two distinct approaches to anti-aging and longevity research. GHK-Cu (Glycyl-L-Histidyl-L-Lysine copper) is a…
BPC-157 vs GHK-Cu
BPC-157 and GHK-Cu both appear in tissue repair and regenerative research contexts, but they address fundamentally different biological prob…
GHK-Cu vs TB-500
GHK-Cu and TB-500 are both studied in repair and recovery contexts, but they operate through entirely different biological mechanisms. GHK-C…
Semax vs Pinealon
Semax and Pinealon are both studied in CNS and neuroprotection research, but their mechanisms and primary research contexts differ substanti…
NAD+ vs MOTS-c
NAD+ and MOTS-c both occupy central positions in mitochondrial and longevity research, but they represent different levels of intervention. …
Epithalon vs Pinealon
Epithalon and Pinealon are both derived from pineal gland research and both associated with anti-aging biology, but they target different bi…
BPC-157 vs Thymosin Alpha-1
BPC-157 and Thymosin Alpha-1 both have broad preclinical research profiles but operate in fundamentally different biological domains. BPC-15…
PT-141 vs Kisspeptin
PT-141 (Bremelanotide) and Kisspeptin are both studied in reproductive and sexual function research, but their mechanisms and points of acti…
AOD-9604 vs GLP-1 (Sema)
AOD-9604 and GLP-1 (Sema) both appear in metabolic and obesity research, but they target entirely different biological mechanisms. AOD-9604 …
NAD+ vs Epithalon
NAD+ and Epithalon are both central to longevity research but target different biological mechanisms and levels of cellular aging. NAD+ is a…
CJC-1295 / Ipamorelin vs Tesamorelin
CJC-1295/Ipamorelin and Tesamorelin both target growth hormone secretion but through different mechanisms and with different research profil…
MOTS-c vs Epithalon
MOTS-c and Epithalon both occupy the longevity research space but address fundamentally different biological mechanisms. MOTS-c is a mitocho…
Selank vs Semax
Selank and Semax are both synthetic heptapeptides developed in Soviet-era neuropharmacology research at the Institute of Molecular Genetics …
Tesamorelin vs Ipamorelin
Tesamorelin and Ipamorelin are both studied as growth hormone secretagogues, but they operate through entirely different receptor systems. T…
Ipamorelin vs Hexarelin
Ipamorelin and Hexarelin are both classified as growth hormone-releasing peptides (GHRPs), and both act as ghrelin receptor (GHS-R1a) agonis…
DSIP vs Pinealon
DSIP and Pinealon both belong to the broader category of CNS-active neuropeptides with origins in biological tissue rather than synthetic en…
Kisspeptin vs Enclomiphene
Kisspeptin and Enclomiphene both influence the hypothalamic-pituitary-gonadal (HPG) axis and have been studied in the context of testosteron…
Research Use Cases
Compounds organized by research objective. Each use case covers mechanisms, context, and related comparisons.
Longevity and Anti-Aging Research
Compounds studied for cellular lifespan, mitochondrial function, and age-related biological decline
Skin and Collagen Research
Compounds studied for collagen synthesis, extracellular matrix remodeling, and dermal repair mechanisms
Cognitive and Neuroprotection Research
Compounds studied for neurotrophic factor modulation, epigenetic neuroprotection, and cognitive function in preclinical models
Metabolic and Weight Management Research
Compounds studied for adipose tissue metabolism, insulin sensitivity, appetite regulation, and growth hormone secretagogue activity
Repair and Recovery Research
Compounds studied for tissue repair, connective tissue healing, angiogenesis, and immune-mediated recovery in preclinical models
Immune Modulation Research
Compounds studied for innate immune signaling, T-cell regulation, antiviral defense, and immune system homeostasis
Sexual Health and Reproductive Research
Compounds studied for central arousal signaling, GnRH axis regulation, and reproductive neuroendocrinology
Growth Hormone Secretagogue Research
Compounds studied for pituitary GH release, GH axis regulation, and body composition effects in preclinical and clinical models
Peptide Stacks
Multi-compound research protocols with synergy rationale and related comparisons for each stack.
Wolverine Stack
BPC-157 and TB-500 combined for multi-mechanism tissue repair research
Longevity Research Panel
NAD+, Epithalon, and MOTS-c for multi-hallmark aging biology research
Skin and Collagen Research Protocol
GHK-Cu and Epithalon for combined ECM remodeling and cellular senescence research in skin aging models
Cognitive Research Stack
Semax, Pinealon, and NAD+ for multi-target CNS and cognitive aging research
Metabolic Research Protocol
GLP-1 Sema, MOTS-c, and AOD-9604 for multi-mechanism metabolic and adipose research
GH Secretagogue Research Stack
CJC-1295/Ipamorelin and Tesamorelin for dual-approach growth hormone axis research
Immune Support Research Stack
Thymosin Alpha-1 and BPC-157 for combined immune modulation and cytoprotective repair research
Comprehensive Recovery Research Protocol
BPC-157, TB-500, and GHK-Cu for three-mechanism tissue repair and recovery research
Study Index
Curated PubMed study references per compound, sortable by year, journal, and author.
BPC-157 Study Index
BPC-157 (Body Protection Compound-157) is a synthetic pentadecapeptide representing a partial sequence of the human gast…
TB-500 Study Index
TB-500 is a synthetic analog of the actin-binding ADS motif of Thymosin Beta-4 (Tβ4), an endogenous actin-sequestering p…
GHK-Cu Study Index
GHK-Cu (Glycyl-L-Histidyl-L-Lysine plus Cu2+) is an endogenous copper-binding tripeptide found in human plasma, saliva, …
Epithalon Study Index
Epithalon (Ala-Glu-Asp-Gly) is a synthetic tetrapeptide developed by Dr. Vladimir Khavinson at the St. Petersburg Instit…
Pinealon Study Index
Pinealon (Glu-Asp-Arg) is a synthetic tripeptide analog derived from a peptide fraction isolated from bovine pineal glan…
Semax Study Index
Semax (Met-Glu-His-Phe-Pro-Gly-Pro) is a synthetic heptapeptide analog of the adrenocorticotropic hormone fragment ACTH(…
NAD+ Study Index
NAD+ (nicotinamide adenine dinucleotide) is a dinucleotide coenzyme that serves as an electron carrier in cellular redox…
MOTS-c Study Index
MOTS-c (Mitochondrial-derived Open reading frame within 12S rRNA, type c) is a 16-amino acid peptide encoded within the …
Thymosin Alpha-1 Study Index
Thymosin Alpha-1 (Ta1) is a 28-amino acid peptide naturally produced by thymic epithelial cells and first isolated by Al…
PT-141 Study Index
PT-141 (Bremelanotide) is a cyclic heptapeptide melanocortin receptor agonist derived from the alpha-MSH analog Melanota…
Kisspeptin Study Index
Kisspeptin is an endogenous neuropeptide that serves as the primary upstream regulator of the hypothalamic-pituitary-gon…
Tesamorelin Study Index
Tesamorelin (TH9507) is a synthetic analog of full-length human GHRH(1-44), stabilized by the addition of a trans-2 hexe…
Delivery Methods
How delivery routes have been examined in published animal models and in vitro systems. Preclinical bioavailability data, stability notes, and research design considerations.
Subcutaneous Administration in Rodent Research Models
Published preclinical literature documents subcutaneous injection as the predominant route for peptide delivery in Sprague-Dawley rat, Wistar rat, and C57BL/6 mouse research models.
Oral Peptide Delivery in Preclinical Research
Published literature documents oral peptide delivery research in rodent gastric models and in vitro GI epithelial systems, with BPC-157 representing the most extensively studied orally active peptide in this context.
Intranasal Peptide Delivery in CNS Research Models
Published preclinical literature documents intranasal delivery as a CNS-targeted route for neuropeptide research in Wistar rat and murine CNS models, with Semax representing the most clinically validated intranasal peptide in this context.
Topical and Dermal Application in Preclinical Models
Published preclinical literature documents topical and dermal peptide delivery in murine dermal wound models and in vitro keratinocyte cultures, with GHK-Cu and TB-500 representing the most studied compounds in dermal research applications.
Intravenous Administration in Animal Research Models
Published preclinical literature documents intravenous peptide delivery in rodent IV infusion models and murine subjects for rapid systemic distribution studies of NAD-plus, Epithalon, and MOTS-C.
Intraperitoneal Administration in Rodent Studies
Intraperitoneal injection is the most commonly employed administration route across all rodent peptide research literature, providing rapid systemic absorption through the peritoneal vasculature in Sprague-Dawley rat and C57BL/6 mouse models.
Lyophilized Peptide Stability in Research Conditions
Published stability literature documents lyophilized (freeze-dried) peptide formulations as the standard storage format for research-grade compounds, with in vitro stability assays characterizing structural integrity under various storage temperature and humidity conditions.
Peptide Reconstitution in Research Laboratory Settings
Published preclinical literature and analytical chemistry research characterizes peptide reconstitution procedures in bacteriostatic water, sterile saline, and physiological buffer systems for research laboratory use.
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Research Compounds
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Shop Research Compounds →Research Areas
Explore compounds organized by scientific domain. Longevity, tissue repair, cognitive, metabolic, immune, dermal, reproductive, GI, growth hormone axis, and mitochondrial research.
Browse Research Areas →State Regulatory Overviews
Federal and state regulatory context for research-grade peptide compounds by US state. General informational overview for researchers and institutions.
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