Purity, set in stone.
Four reference peptides, lyophilized and lot-matched to an independent Certificate of Analysis. The full specification is published before anything ships.
For laboratory research use only — not for human or veterinary use.
Reference standards, documented to the lot
Find your class of standard
Every batch, documented
before it ships
Search any product or lot number to pull its HPLC and mass spectrometry Certificate of Analysis — identity and purity, signed by an independent third-party lab. Nothing leaves the bench unverified.
- Identity
- Mass spectrometry
- Purity
- HPLC, area %
- Appearance
- Recorded per lot
- Laboratory
- Independent, third-party
- Traceability
- Matched to the lot number
- Access
- Published before purchase
What does "research use only" mean?
Every product is a laboratory reference standard supplied solely for in-vitro research — not for human or veterinary use, and not a drug, food, supplement, cosmetic, or medical device.
Is a Certificate of Analysis included?
Yes — every tested lot is matched to a third-party COA covering identity and purity. Browse and download them in the COA Library, before or after purchase.
How do I pay?
Choose a method at checkout, send the total directly, then email a screenshot as proof. Your order is reserved and ships once payment is confirmed — no card is charged on the site.
Who can purchase?
You must confirm you are at least 21 and a qualified researcher (or authorized to buy for a research institution). This is recorded with every order.
Analytical reference standards —
nothing more, nothing implied.
Stonegate Research supplies lyophilized research reference standards for laboratory research use only. Every batch is tested by an independent third-party laboratory and ships with a Certificate of Analysis tied to its lot number.