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Research-grade peptides verified to ≥99% purity by HPLC and mass spectrometry, with the certificate of analysis published for every batch. Not available on request — published.
- ≥99%
- Verified purity floor
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- All 50 states
- Nationwide delivery
- Every batch
- Certificate published
Browse by research area
Metabolic
Compounds in this category are studied for their activity at incretin receptors — principally GLP-1, GIP, and glucagon receptor pathways — and their downstream effects on glucose regulation and energy metabolism in preclinical models. This is the most heavily published area of peptide research in the last decade.
5 compounds →Tissue Repair
Research in this category centers on angiogenesis, extracellular matrix remodeling, cell migration, and cytoprotective signaling. Much of the published literature involves rodent injury models and in vitro fibroblast and endothelial assays.
3 compounds →Growth Hormone
These compounds fall into two mechanistic families: GHRH analogs that act on the GHRH receptor, and ghrelin-receptor (GHS-R1a) agonists. Research interest lies in their differing selectivity profiles and effects on pulsatile secretion in animal models.
4 compounds →Longevity
This category covers mitochondrial-derived peptides, cardiolipin-targeting compounds, and molecules studied in the context of cellular senescence and telomere biology. An active and comparatively young research area.
6 compounds →Cognitive
Compounds here are investigated for interactions with neurotrophic factors, monoamine systems, and GABAergic signaling. Much of the foundational literature originates from Russian institutional research and is worth reading in translation.
3 compounds →Specialty
Single compounds that do not fit the primary categories, plus pre-combined research blends prepared for protocols requiring multiple compounds from a single vial.
4 compounds →Catalog
All 25 compounds →
Low stockSemaglutide
5–20mg · ≥99% pure
Long-acting GLP-1 receptor agonist studied extensively for incretin pathway signaling and glucose regulation in preclinical models.
- CAS
- 910463-68-2
- MW
- 4113.58
- Purity
- ≥99%
Tirzepatide
10–30mg · ≥99% pure
Dual GIP and GLP-1 receptor agonist — a 39-amino-acid synthetic peptide studied for combined incretin pathway activity.
- CAS
- 2023788-19-2
- MW
- 4813.45
- Purity
- ≥99%
Low stockRetatrutide
10–30mg · ≥99% pure
Triple agonist at GIP, GLP-1, and glucagon receptors — among the most actively studied compounds in current metabolic research.
- CAS
- 2381089-83-2
- MW
- 4731.32
- Purity
- ≥99%
BPC-157
5–10mg · ≥99% pure
Synthetic pentadecapeptide derived from a gastric juice protein, widely studied for cytoprotection and angiogenic signaling.
- CAS
- 137525-51-0
- MW
- 1419.53
- Purity
- ≥99%
TB-500
5–10mg · ≥99% pure
Synthetic thymosin beta-4, a 43-amino-acid actin-sequestering peptide studied for cell migration and angiogenesis.
- CAS
- 77591-33-4
- MW
- 4963.44
- Purity
- ≥99%
GHK-Cu
50–100mg · ≥99% pure
Naturally occurring copper-binding tripeptide studied for extracellular matrix remodeling and gene expression modulation.
- CAS
- 89030-95-5
- MW
- 400.9
- Purity
- ≥99%
The Journal
How to verify a supplier, read a certificate, and weigh the published evidence.
Verification · 7 min
What a Certificate of Analysis Actually Proves — and What It Doesn't
Nearly every supplier says 'COA available.' Far fewer will show you one before you buy, and fewer still ship a certificate that matches the vial in the box. Here is how to tell the difference.
Buying · 5 min
Why Two Suppliers Sell 'TB-500' at Molecular Weights Five Times Apart
One name, two molecules, a fivefold difference in mass, and two separate bodies of literature. This is the clearest example of why you check the molecular weight before you check the price.
Handling · 6 min
Cold Chain: What Actually Degrades a Peptide in Transit
Cold chain packaging is worth paying for, but not for the reason most suppliers imply. Lyophilized material is stable. The real risks start after the box is opened.
Compare compounds
Molecular weight, mechanism, cost per milligram, and how strong the evidence actually is — side by side.
NAD+ vs 5-Amino-1MQ
Direct NAD+ supply against inhibition of the enzyme that depletes its precursor — two opposite strategies toward the same pool.
AOD-9604 vs Tesamorelin
An hGH fragment selected to exclude growth signaling, against a GHRH analog that deliberately drives the full axis.
GHK-Cu vs BPC-157
Both studied in tissue repair contexts, but one works through matrix remodeling and copper delivery, the other through angiogenic signaling.
BPC-157 vs TB-500
The most frequently co-administered pair in the repair literature, which means they are also the most frequently conflated. They act through entirely different mechanisms.
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