Spooktoberfest 20% off every single vialResearch peptides,
Research peptides,
third-party tested.
We send our compounds to an independent lab and post each certificate on the product page, so you can read it before you order.
Frequently requested
In stock now
Tirzepatide
Synthetic dual GIP and GLP-1 receptor agonist analog
BPC-157
Synthetic pentadecapeptide
GHK-Cu
Copper-binding tripeptide complexCatalog
Browse by type
GLP-1 Research Peptides
Analogs of the gut hormones GLP-1 and GIP, and of amylin.
4 compoundsResearch Peptides
Single-chain amino acid sequences, supplied freeze-dried.
18 compoundsResearch Blends
Two or more compounds combined in one vial.
9 compoundsCellular and Cofactors
Mitochondrial peptides, NAD+ and related cofactors.
7 compoundsBioregulators
Short peptides, three to four amino acids long.
2 compoundsLaboratory Supplies
Bacteriostatic water for mixing freeze-dried powder.
1 itemCustomer reviews
What customers say
★★★★★ 5.0 from 14 customer reviews
Amazing packaging, great company, and the best prices on compounds with COAs.
Oscar A Customer, October 2026
They’re very responsive and answer any questions you have! I get my orders fast and their products are great!
Priscilla Verified customer, October 2026
They have great quality, friendly service, and quick responses. I recommend everyone I know to SBZ!
Aaron T. Verified customer, October 2026
Certificates
Read the lab report before you order.
We send compounds to an independent lab. It checks that the compound is what the label says and measures purity. When a report comes back, the certificate goes on the product page, so you can read the results before you order.
See the certificates
Certificate of analysisILS Laboratories · COA-2026-D3O3K8
- Compound
- GHK-Cu 50 mg
- Method
- RP-HPLC, 214 nm
- Analysed
- 10 Aug 2026
Chromatogram
- Purity, HPLC
- 99.84%
- Identity
- Confirmed
How it works
From sample to certificate
- 01
Sample sent
We send a sample to an independent lab, with the compound named on the submission form.
- 02
Tested
The lab confirms the compound and measures purity by HPLC.
- 03
Numbered report
The lab issues a report with its own number, which you can check with the lab yourself.
- 04
Posted
The certificate goes on the product page and in the certificate archive.
Certificates
Read the certificate before you order.
Pick a compound to see its latest lab report. Lab name, report number, purity and identity, on the product page.
Research library
Guides
Documentation
How to read a certificate of analysis
What the purity number means, what identity means, and the fields to check before you order.
Read HandlingReconstitution and handling
How to mix a freeze-dried peptide with bacteriostatic water, and why the powder lasts longer than the solution.
Read StabilityStorage, stability and degradation
What heat, light and freeze-thaw cycles do to a peptide, and how long each storage condition buys you.
ReadWholesale
Wholesale for labs, institutions and resellers
Ordering in volume? Tell us the compounds and quantities and we quote by quantity, on what is in stock, invoiced on confirmation. Same tested material, same published certificates. Bulk is a quantity, not a grade.
Request a wholesale quoteHow wholesale works
- Tell us what you needCompounds, sizes and how often you order.
- Get a quote by quantityPriced on volume and what is in stock. Invoiced on confirmation.
- Ships trackedPosted lab certificates are on each product page.
Typically 10 or more vials of a compound per order.
Common questions
Common questions
What does "Research Use Only" mean?
It means the product is sold for laboratory research and nothing else. Nothing we sell is a drug, food, supplement or cosmetic. None of it is FDA approved, and none of it is for human or veterinary use.
Can I see the certificate of analysis before I order?
Where one is posted, yes. Certificates are on the product page and in the certificate archive, no account needed. If a compound does not show one yet, ask us where its report stands.
How are compounds tested?
We send a sample to an independent lab. They confirm it is the right compound and measure how pure it is by HPLC. The certificate states the lab, the method and the result.
What is a certificate of analysis?
The lab report for a tested sample. The two numbers that matter are the HPLC purity, which is the share of the sample that is the compound, and the identity result, which confirms the compound is the one on the label.
What is bacteriostatic water?
Sterile water with 0.9 percent benzyl alcohol as a preservative, so a vial can be opened more than once. It is what you mix freeze-dried peptide with. We sell it in 30 mL vials.
What does lyophilized mean?
Freeze-dried. The peptide is frozen and the water is pulled out under vacuum, leaving a dry powder. Powder keeps for a long time at minus 20 C. Once mixed with water it does not.
How should I store it?
Freeze-dried powder goes in the freezer at minus 20 C, out of the light. Once mixed, keep it in the fridge at 2 to 8 C and use it within the window in the stability guide. Each product page lists its own storage line.
Do you publish safety data sheets?
We add each sheet next to the certificate when the supplier sends it. If a sheet is not on file yet, we say so. We do not substitute a generic one.
What is the difference between HPLC and mass spectrometry?
HPLC tells you how pure the sample is. Mass spectrometry tells you what the compound is. A good certificate answers both questions, because a purity number on its own does not say what is in the vial. Our lab confirms identity by HPLC retention time against a reference standard.
How is my order packaged?
Plain box, no branding, no product names on the outside. Vials ship sealed in a padded insert, with a packing slip listing everything in the box.
Do you offer wholesale pricing?
Yes. Labs, institutions and resellers ordering ten or more vials of a compound can request a quote by quantity, invoiced on confirmation. The material is the same, and posted certificates are on each product page. Only the price per vial changes.
Who can buy?
Researchers and institutions, 21 or over. Placing an order confirms you meet that description and will handle the material under applicable law and good laboratory practice.