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About Good Peptide Co
Back to the basics of research supply
We supply research peptides the way a laboratory expects them: identified, tested, documented, and traceable to the lot. Every vial carries a lot number. Every lot has a certificate. Every certificate can be checked.
HPLC purity · LC-MS identity · Documented COAs
- Minimum purity, HPLC-UV
- 98%
- Independent methods, every lot
- 2
- Lots with a published COA
- 100%
- From payment to shipment
- 48 hr
What we do
Compounds, described by their chemistry
Good Peptide Co supplies synthetic peptides and related research compounds to qualified researchers, laboratories, and research institutions. Each compound is supplied as a lyophilized research material and listed by its chemical identity: name, CAS number, molecular formula and weight, purity, vial size, and storage conditions. We are a research supplier, and that is all we are. Our products are for in vitro laboratory research and analytical use only. They are not drugs, foods, dietary supplements, or cosmetics, and they are not for human or veterinary use.
Our story
Describe the molecule.
Test the lot.
Publish the report.
The research peptide market grew quickly, and its standards did not always keep pace. Labels changed, documentation was hard to find, and too much of the conversation drifted away from the chemistry. We started Good Peptide Co to go back to the basics. Our catalog describes compounds, not outcomes. Our testing is done by independent laboratories, not by us. Our certificates are published as issued, matched to the lot number on the vial.
What makes it good
Four standards, every lot
- 01
HPLC-UV
Purity
Every lot is tested by HPLC-UV against a minimum specification of ≥98%. We report the measured result, not a rounded promise.
- 02
LC-MS
Identity
LC-MS confirms that the compound in the vial is the compound on the label, by molecular mass.
- 03
Independent lab
Documentation
Testing is performed by an independent laboratory. Each certificate names the lab, the methods used, and the reported results, and is published unedited.
- 04
Lot number
Traceability
Every vial carries a lot number, manufacture date, and expiration date. The lot number links the vial to its Certificate of Analysis.
Lab note
Purity and content are not the same
Purity is how much of the material is the intended compound rather than related impurities. Content is how much compound is present compared with the labeled amount. Both can vary slightly from lot to lot because of normal variation in synthesis, drying, weighing, and filling, and in instrument measurement. We publish results as reported, so you can see the actual numbers for the lot in your hands.
Traceability
Match the vial to the report
Three steps, no guesswork.
- 01
Find the lot number
Printed on the vial label.
- 02
Enter it
In the certificate lookup.
- 03
Compare
The product, lot, dates, and results on the certificate with the vial.
Our boundaries
What you won’t find here
Being clear about what we are means being clear about what we are not.
- 01We do not provide dosing, administration, reconstitution, or protocol guidance, in any channel.
- 02We do not make claims about effects in people or animals.
- 03We do not publish testimonials or personal-use stories.
- 04We are not a pharmacy, a compounding pharmacy, or an outsourcing facility.
Our support team can help with orders, shipping, certificates, lot numbers, specifications, and storage.
Get back to good research
Register a research account. Browse the catalog. Check the certificate. Match it to the lot.
