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Science-first overviews of the compounds we carry and the standards we hold them to. All content is for educational purposes only.
Research glossary →Peptide Research
What is BPC-157? A Research Overview
A lab-focused overview of BPC-157, including its peptide structure, how it is studied, and what the published research shows.
Metabolic Research
NAD+ and Cellular Energy: What the Research Shows
An overview of nicotinamide adenine dinucleotide (NAD+), its role in cellular metabolism, and what laboratory research has found.
Lab Standards
How to Read a Certificate of Analysis
A plain-English guide to understanding COA documents — what HPLC purity means, how to verify lot numbers, and what to look for.
Lab Standards
Purity Standards in Research Peptides: HPLC Explained
What does '≥98% purity by HPLC' actually mean? This article breaks down the analytical chemistry behind peptide purity testing.
Peptide Research
BPC-157 vs TB-500: Mechanism, Structure, and Why Researchers Stack Them
BPC-157 vs TB-500 compared by mechanism and structure: gastric pentadecapeptide angiogenesis vs thymosin beta-4 actin binding, and why researchers stack them.
Peptide Research
What Is TB-500? Thymosin Beta-4, Actin Binding, and Research Applications
What is TB-500? A research overview of the thymosin beta-4 fragment: the Ac-LKKTETQ active site, G-actin sequestration, angiogenesis, and cell migration.
Peptide Research
BPC-157 Half-Life Explained: Why the 15-Minute Number Misleads Researchers
BPC-157 half-life explained: why the ~15-minute plasma elimination figure understates the weeks-long downstream tissue effects seen in research models.
Peptide Research
GHK-Cu Copper Peptide: How It Regulates 1,500+ Genes for Skin and Tissue Repair
GHK-Cu copper peptide explained: how the tripeptide-copper complex regulates 1,500+ genes and drives collagen, elastin, and GAG synthesis in research models.
Peptide Research
GHK-Cu for Hair Research: Dermal Papilla Activation and the Anagen Phase
GHK-Cu hair growth research: how the copper peptide activates dermal papilla cells, supports the anagen phase, and what human study data shows.
Metabolic Research
What Is MOTS-c? The Mitochondrial-Derived Peptide and AMPK Metabolism
What is MOTS-c? A research overview of the mitochondrial-derived peptide encoded in 12S rRNA, its AMPK-driven glucose metabolism, and exercise link.
Peptide Research
Semax vs Selank: Two Russian Nootropic Peptides Compared (BDNF vs GABA)
Semax vs Selank compared: the ACTH-derived focus peptide (BDNF, dopamine) versus the tuftsin-derived calm peptide (GABA, serotonin) in nootropic research.
Peptide Research
What Is Selank? Tuftsin-Derived Anxiolytic Peptide and GABA Modulation
What is Selank? A research overview of the tuftsin-derived anxiolytic peptide, its GABA, serotonin, and enkephalin modulation, and stress-research uses.
Peptide Research
CJC-1295 and Ipamorelin: Why the GHRH + Ghrelin-Mimetic Stack Is Studied as Synergistic
CJC-1295 and Ipamorelin explained: how a GHRH analog and a selective ghrelin mimetic hit two receptor pathways, and what the animal and human pharmacology literature actually shows about that combination — for research use only.
Metabolic Research
Tesamorelin Mechanism: How a GHRH Analog Targets Visceral Fat
Tesamorelin mechanism of action: how the stabilized GHRH analog drives pulsatile GH release and IGF-1-mediated regional visceral fat lipolysis in research.
Peptide Research
What Is DSIP? Delta Sleep-Inducing Peptide and the Riddle of Deep Sleep
What is DSIP? A research look at delta sleep-inducing peptide: a 1977 nonapeptide named for delta-wave EEG effects whose mechanism remains unresolved.
Metabolic Research
Retatrutide Explained: The Triple GLP-1 / GIP / Glucagon Agonist (Informal "GLP-3" Class)
Retatrutide explained: how the triple GLP-1/GIP/glucagon receptor agonist (informal "GLP-3" class) adds a rodent-model energy-expenditure pathway and produced up to ~24% weight loss in a Phase 2 trial.
Metabolic Research
Retatrutide vs Tirzepatide vs Semaglutide: Single, Dual, and Triple Agonists
Retatrutide vs tirzepatide vs semaglutide compared: single, dual, and triple incretin agonists and the ~15%, ~22.5%, and ~24% weight-loss data behind them.
Metabolic Research
What Is GLP-2? Teduglutide, Intestinal Growth, and Gut Barrier Research
What is GLP-2? A research overview of the intestinotrophic peptide, teduglutide's DPP-4-resistant Gly2 substitution, and gut-barrier and villus-growth effects.
Lab Standards
How to Reconstitute Research Peptides with Bacteriostatic Water
How to reconstitute research peptides with bacteriostatic water: swirl-don't-shake technique, vial-wall method, benzyl alcohol, and 2-8C storage for lab rigor.
Peptide Research
What Is Semax? ACTH-Derived Peptide, BDNF Upregulation, and Research Uses
What is Semax? A research overview of the ACTH(4-10)-derived heptapeptide, its BDNF/TrkB upregulation data, and its use in cognition and neuroprotection research.
Metabolic Research
NAD+ vs NMN: Precursor or Direct Coenzyme in Longevity Research?
NAD+ vs NMN compared: direct coenzyme administration versus a biosynthetic precursor that must be converted intracellularly via the NAD+ salvage pathway.
Metabolic Research
Growth Hormone Secretagogues Explained: GHRH Analogs vs GHRPs
Growth hormone secretagogues explained: how GHRH analogs (Tesamorelin, CJC-1295) and ghrelin-mimetic GHRPs (Ipamorelin) drive GH release through two distinct receptor pathways.
Peptide Research
What Are Research Peptides? A Plain-English Guide to "Research Use Only"
What are research peptides, and what does "research use only" (RUO) actually mean? A plain-English guide to peptide basics, sourcing, and how to evaluate a supplier.
Lab Standards
What Is Lyophilization? Why Research Peptides Ship as Freeze-Dried Powder
What is lyophilization? How freeze-drying stabilizes research peptides for shipping and storage, and why it beats shipping compounds in solution.
Lab Standards
What Is Bacteriostatic Water and Why Researchers Use It for Peptide Reconstitution
What is bacteriostatic water? Why its 0.9% benzyl alcohol preservative makes it the standard diluent for reconstituting multi-use research peptide vials.
Lab Standards
Peptide Storage and Stability: Lyophilized vs. Reconstituted Shelf Life
How long do research peptides last? Comparing lyophilized storage stability (24+ months) against reconstituted shelf life (weeks, refrigerated).
Lab Standards
Freeze-Thaw Cycles and Peptide Integrity: Why Researchers Aliquot
Why repeated freeze-thaw cycles degrade reconstituted research peptides, and why aliquoting into single-use portions is standard lab practice.
Lab Standards
How Mass Spectrometry Confirms Peptide Identity on a Certificate of Analysis
How mass spectrometry confirms peptide identity on a COA — molecular weight verification, why it matters beyond HPLC purity, and how to read observed vs theoretical MW.
Lab Standards
Heavy Metal Testing for Research Peptides: ICP-MS, Arsenic, Lead, and Why It Matters
How heavy metal testing works for research peptides — ICP-MS methodology, the USP <232>/<233> and ICH Q3D elemental impurity standards, and the four Class 1 elements.
Lab Standards
Cold Chain and Shipping: How Lyophilized Peptides Stay Stable in Transit
How lyophilized research peptides stay stable during shipping — insulated packaging, ice packs, and why lyophilization matters more for transit than refrigeration does.
Metabolic Research
GLP-1, GLP-2, and "GLP-3": Understanding the Incretin Peptide Family
GLP-1 vs GLP-2 vs the informal "GLP-3" triple-agonist class explained — three distinct hormone-receptor systems often confused because of similar naming.
⚠ All articles are for informational and educational purposes only. Products described are for research use only and not intended for human consumption. Nothing here constitutes medical advice.