Lot-level controls, not marketing claims.
Quality on this site means one specific thing: every lot we list has cleared a fixed release check before it ever appears in the catalog. The check looks at identity confirmation, HPLC purity against the published target for that compound, and the presence of a lot-specific certificate of analysis written by the same lab that produced it. Lots that miss any of those three are not catalogued. We don't synthesize or repackage anything in-house — we verify the supplier's documentation exists, that it matches the vial label, and that the spec on the product page reflects what is actually in stock.
Three gates before a lot appears in the catalog
Identity
Compound identity is confirmed by mass spectrometry or equivalent analytical documentation written by the synthesising lab.
Purity
HPLC purity is reviewed against the published target for that compound. The minimum across the catalog is ≥98%.
Certificate
A lot-specific certificate of analysis exists, is dated, and matches the lot number on the vial label.
How the controls actually run
Analytical review
- Purity reviewed against lot-level HPLC targets.
- Identity reviewed where MS or equivalent documentation is provided.
- Lot IDs and file dates retained for traceability.
- Lots missing any required document are not catalogued until a clean replacement arrives.
Handling standards
- Sealed nitrogen-capped vials at outbound processing.
- Lot labelling verified against the certificate of analysis.
- Per-compound storage guidance is shown on individual product pages.
- The handling & storage guide is linked from every product page.
Policy scope
- Listings are for in-vitro laboratory research use only.
- Product information and linked references support technical review and catalog transparency.
- Nothing on this page is a diagnostic, therapeutic, or clinical claim.
- Buyers are responsible for compliance with regulations in their jurisdiction.
Handling & storage of synthetic peptides
The full handling guide is also linked on every product page's Documentation table. Covers lyophilized storage, reconstitution best practice, post-mix shelf life at 2–8°C, and freeze-thaw guidance.
Every vial here has cleared this process.
Browse the 89 sealed vials currently in stock.