Peptide Research Library — Compound Guides, COA Science & Canadian Buying Guides
Cited overviews of research peptides written for Canadian researchers: what the literature says about each compound, how to read a certificate of analysis, and how to buy and verify peptides in Canada. Every article carries numbered references and a named author.
- 56
- articles, cited
- 21
- compounds covered
- Sep 5
- latest update
Browse by Topic
- Pillar 01
Compound Guides
Literature overview, sequence, molecular weight, storage and reconstitution for each peptide.
21 articles - Pillar 02
COAs & Testing
Reading a certificate, HPLC purity vs measured content, spotting a fake COA, Janoshik verification.
12 articles - Pillar 03
Buying Peptides in Canada
Where to buy, what to check, shipping across Canada, payment, storage on arrival.
3 articles - Pillar 04
Regulation & Compliance
Health Canada and FDA positions, research-use-only status, current primary-source reading.
4 articles - Pillar 05
Comparisons & Lab Practice
Compound-vs-compound comparisons, reconstitution math, aliquoting, cold-chain handling.
16 articles
Start Here
Newest articles →Peptide Blends, Explained: The Logic and the Verification Problem
Multiple compounds in one vial is the fastest-growing corner of the research market and its least-verified one. The research logic is real; so is the analytical problem it creates
Adam Reeves · Research Editor · Updated Sep 5, 2026 · 4 min read · 3 references
- Compound Comparison
Ipamorelin vs Sermorelin: Two Doors Into the Same Axis
Adam Reeves · Sep 5, 2026 · 4 min
- Compound Comparison
Selank vs Semax: Siblings, Not Twins
Adam Reeves · Sep 5, 2026 · 4 min
- Compound Comparison
GHK-Cu: Cosmetic Topicals Against Research-Grade Material
Adam Reeves · Sep 5, 2026 · 4 min
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56 articles
Verification & Testing
9- Verification GuideCOAs & Testing
Purity vs Fill Accuracy: Why One Number Is Not Enough
Two independent measurements, and why suppliers publish only the first
- VerificationCOAs & Testing
How to Verify a Peptide COA in Three Steps
A certificate is only worth what its verification path is worth, and most of the market has no verification path at all
- VerificationCOAs & Testing
How to Spot a Fake Peptide COA: Seven Red Flags
Most bad certificates are not forgeries. They are real documents used to say something they do not say.
- Verification GuideCOAs & Testing
How to Read a Certificate of Analysis
What each figure on a peptide COA proves — and what it does not
- VerificationCOAs & Testing
Janoshik Testing Explained: How Every Eppix Batch Is Verified
What the laboratory measures, what its certificates report, and how to check any of ours on its database in two minutes
- VerificationCOAs & Testing
What Is HPLC Testing, and What Can It Not Tell You?
Every peptide supplier in Canada cites HPLC and almost none explain it, because an explained number is a checkable number. Here is what the test measures and where its two blind spots are
- VerificationCOAs & Testing
Mass Spectrometry: The Test That Proves What Is Actually in the Vial
HPLC tells you a sample is pure. Mass spectrometry tells you what it is pure of, which in a market where substitution is the profitable fraud is the more load-bearing question
- VerificationCOAs & Testing
Underfilled Vials: The Market's Quietest Fraud
Adulterated peptides make headlines. Underfilled ones make margins. Selling six milligrams in a ten-milligram vial is invisible to the eye, invisible to purity testing, and across thousands of vials the most profitable dishonesty available
- VerificationCOAs & Testing
Why We Publish Every Certificate Before You Buy
Most suppliers treat a certificate as customer service, produced when asked. Publishing before the sale is a different thing entirely, and the difference is structural rather than cosmetic
Method & Reference
7- Laboratory PracticeLab Practice
Peptide Reconstitution: The Laboratory Guide
Solvent choice, the arithmetic, and the handling errors that destroy material before an experiment starts
- Laboratory PracticeLab Practice
Peptide Storage and Shelf Life: The Laboratory Guide
Four degradation routes, two physical states, and why the dry solid is so much more forgiving than the solution
- Laboratory PracticeLab Practice
Bacteriostatic Water: The Complete Laboratory Guide
The least interesting item in a peptide order is the one most protocols depend on. What it is, when sterile water is the wrong substitute, and the handling rules that keep a reconstituted vial usable
- Laboratory PracticeLab Practice
How Peptides Are Made: Solid-Phase Synthesis, Explained Plainly
Understanding how a peptide is assembled explains most of the quality questions this market runs on: why impurities exist, why purity varies between lots, and why long or modified sequences cost what they cost
- ReferenceLab Practice
Understanding Peptide Sequences: How to Read the Letters
Every product page lists a sequence. Being able to read one turns a listing from marketing into data, and it takes about five minutes to learn
- ReferenceLab PracticeCOAs & Testing
Peptide Molecular Weight: The Number That Anchors Every Verification
Of all the figures on a product page, molar mass looks the most decorative and is the most load-bearing: it is what makes identity testing possible and what lets you audit a certificate yourself
- ReferenceLab PracticeCOAs & Testing
The Peptide Research Glossary, A to Z
Every term that actually appears on a certificate, a product page or in the literature, defined in plain language, with links where a term has its own guide
Buying & Shipping
5- Buyer GuideBuying & ShippingLab Practice
Eight Mistakes First-Time Research Buyers Make, and the Fix for Each
Every support inbox in this industry sees the same eight first-order mistakes, in roughly the same order. Here they are, with what to do instead
- Buyer GuideBuying & Shipping
How We Ship Research Peptides Across Canada
Shipping is where supplier promises get tested daily. Here is exactly how an order moves: transit by region, what the packaging does and does not say, and why lyophilised material does not need a cold chain
- Buyer GuideBuying & Shipping
Peptide Pricing in Canada: What You Are Actually Paying For
The same compound at the same strength runs at very different prices across Canadian sites. The spread is not random and it is not margin: it maps onto four real costs
- Buyer GuideBuying & Shipping
Interac e-Transfer for Research Orders: The Canadian Standard, Explained
New buyers are often surprised that bank transfer rather than card is the workhorse payment of the Canadian research market. There are good reasons, and two practical things worth knowing first
- Buyer GuideBuying & ShippingCOAs & Testing
Peptide Blends, Explained: The Logic and the Verification Problem
Multiple compounds in one vial is the fastest-growing corner of the research market and its least-verified one. The research logic is real; so is the analytical problem it creates
Regulation
3- Regulatory
Are Peptides Legal in Canada? A Plain-Language Overview
Two statutes, one boundary, and why "research use only" is a legal description rather than a disclaimer
- RegulatoryBuying & ShippingRegulation
Importing Research Peptides Into Canada: The Risks Nobody Prices In
Overseas listings are sometimes cheaper on paper. The paper leaves out what the border does to gray-area compounds, and the omission is larger than the discount
- RegulatoryRegulation
Peptides and Anti-Doping: The WADA and CCES Layer, Explained
"Is it legal" and "is it prohibited in sport" are different questions with different answers, policed by different systems. This page covers the second one
Compound Guides
20- Sourcing GuideCOAs & TestingRegulation
How to Choose a Peptide Supplier in Canada: A Nine-Point Checklist
Nine things that are checkable before you spend anything, ordered by how much they tell you
- Sourcing GuideTissue Repair
BPC-157 in Canada: Purity, Batch Certificates and What to Check
The most-searched research peptide in Canada, and the four things worth checking before a vial is ordered
- Sourcing GuideTissue Repair
TB-500 in Canada: The Thymosin β4 Fragment, Tested by Batch
What is actually in a TB-500 vial, why the naming confusion matters commercially, and how to verify a lot
- Sourcing GuideMetabolic & GLP-1
Retatrutide in Canada: The Triple Agonist, and What Is Actually Published
A phase 2 compound with real trial data, no approval anywhere, and a research supply market moving faster than the evidence
- Sourcing GuideMetabolic & GLP-1
Tirzepatide in Canada: Research-Grade, and How It Differs From the Pharmacy Product
The dual agonist with the deepest trial record in its class, and the distinction that matters when you buy it as a research material
- Sourcing GuideMetabolic & GLP-1
Semaglutide in Canada: Research-Grade, Verified by Batch
The most-studied GLP-1 analogue, the difference between a research vial and a prescription product, and what a certificate has to prove
- Sourcing GuideTissue Repair
GHK-Cu in Canada: The Copper Peptide, and Why the Copper Is the Hard Part
A tripeptide-copper complex with a fifty-year literature, and a quality question most certificates do not answer
- Sourcing GuideGrowth Hormone
CJC-1295 and Ipamorelin in Canada: The Blend, and What Each Half Does
Two compounds with different mechanisms sold in one vial, and the certificate problem that creates
- Sourcing GuideMetabolic & GLP-1Longevity
MOTS-c in Canada: The Mitochondrial-Derived Peptide
A 16-residue peptide encoded in mitochondrial DNA, a decade of metabolic literature, and a July 2026 regulatory vote
- Sourcing GuideLongevity
NAD+ in Canada: The Coenzyme, Not a Peptide
What NAD+ actually is, why it does not get a purity certificate that looks like a peptide certificate, and what the literature supports
- Sourcing GuideTissue RepairImmune & Inflammation
KPV in Canada: The α-MSH Fragment in Inflammation Research
A tripeptide with a real preclinical literature, a July 2026 regulatory moment, and a supply market that has not caught up
- Sourcing GuideGrowth Hormone
Ipamorelin in Canada: The Selective Secretagogue
A pentapeptide whose defining property is what it does not do, and a certificate check that suits a small molecule
- Sourcing GuideGrowth Hormone
Tesamorelin in Canada: The GHRH Analogue With Approved-Drug Data
The only compound in the GH-axis catalogue with completed phase 3 trials, and why that does not transfer to a research vial
- Sourcing GuideMetabolic & GLP-1
Cagrilintide in Canada: The Long-Acting Amylin Analogue
The compound that made amylin the incretin field's second act, with published phase 2 data and no approval
- Sourcing GuideCognitive
Selank in Canada: The Tuftsin Analogue From the Russian Literature
A heptapeptide with a real research programme published almost entirely in one language, and what that means for reading the evidence
- Sourcing GuideLongevity
Epitalon in Canada: The Telomerase Claim, Examined
A four-residue peptide carrying one of the strongest claims in the field, and the thinnest independent evidence base to support it
- Sourcing GuideGrowth Hormone
Sermorelin in Canada: GHRH(1-29), and the Approval That Was Withdrawn
The shortest fully active GHRH fragment, once an approved diagnostic and paediatric agent, now a research material again
- Sourcing GuideImmune & Inflammation
Thymosin Alpha-1 in Canada: The Immune Peptide With Real Approvals Elsewhere
Approved in dozens of countries, never approved in North America, and sold here as a research material
- Sourcing GuideMetabolic & GLP-1Longevity
5-Amino-1MQ in Canada: The NNMT Inhibitor That Is Not a Peptide
A small molecule in a peptide catalogue, with a specific enzyme target and a certificate that should look different
- Sourcing GuideMetabolic & GLP-1
Eloralintide in Canada: The Selective Amylin Agonist
The newest compound on the metabolic shelf, with a short but genuinely peer-reviewed public record
Comparisons
10- Compound ComparisonTissue Repair
BPC-157 vs TB-500: The Research Comparison
Two compounds routinely sold as a pair, with different origins, different mechanisms and very different evidence quality
- Compound ComparisonMetabolic & GLP-1
Retatrutide vs Tirzepatide: Triple Against Dual
One extra receptor, one approval, and a gap in trial depth that the receptor count does not close
- Compound ComparisonMetabolic & GLP-1
Semaglutide vs Tirzepatide: The Only Head-to-Head Trial in the Class
One receptor against two, and the rare case where the comparison was actually run rather than inferred
- Compound ComparisonMetabolic & GLP-1
Semaglutide vs Retatrutide: One Receptor Against Three
The most established incretin compound set beside the most watched investigational one, and why the comparison is asymmetric in a way that is itself the answer
- Compound ComparisonMetabolic & GLP-1
Cagrilintide vs Semaglutide: Two Hormone Systems, One Combination
A comparison that exists because of a combination: understanding why these two molecules are paired explains each of them better than ranking them ever could
- Compound ComparisonGrowth Hormone
CJC-1295 With DAC vs Without DAC: One Suffix, an Order of Magnitude
The two compounds most often confused with each other in this catalogue, and the confusion is not harmless: they behave completely differently in time
- Compound ComparisonGrowth Hormone
Ipamorelin vs Sermorelin: Two Doors Into the Same Axis
A common cross-shop with a clean answer: these compounds enter the growth-hormone axis through different receptors, which is why the real research question is rarely either-or
- Compound ComparisonCognitive
Selank vs Semax: Siblings, Not Twins
Two Russian-developed heptapeptides that share a stabilising tail and a research ecosystem, and differ in almost everything that affects protocol design
- Compound ComparisonTissue RepairLab Practice
GHK-Cu: Cosmetic Topicals Against Research-Grade Material
The one compound in this catalogue with a parallel life in the cosmetics aisle, and the confusion that generates about what the research-grade product actually is
- Compound ComparisonTissue RepairLab Practice
BPC-157 Capsules vs Vials: What Actually Differs for Research
One molecule, two formats, and a set of differences that are real rather than cosmetic: stability, concentration control, and what the certificate has to measure in each case
Literature Overviews
2How These Articles Are Written
- 01Numbered inline citations tied to a References section with PMIDs or DOIs.
- 02A real batch-COA table where a compound is discussed — lot, HPLC purity, measured vs labelled content.
- 03Named human author with a public bio; published and updated dates shown.
- 04Regulatory statements link to the primary source and are dated.
- 05All content is for in vitro and laboratory research reference only. No dosing or administration guidance.
Editorial Team
Adam Reeves — Research Editor
Compiles compound overviews and COA methodology from peer-reviewed literature and Janoshik reports. Bio, credentials and contact on the author page.
All articles by Adam →New articles and batch results, weekly
One email. No promotions inside the research digest.
All products are supplied for in vitro and laboratory research purposes only.