Certificate of Analysis (COA)
Compound identity, lot reference, purity/assay fields and QC sign-off fields for the production lot for the selected current batch.
In-house production & QC · batch documentation support for the production lot
batch-linked COA, HPLC chromatogram and MS identity documentation backed by a verification workflow.
Pepti provides COA, HPLC purity data, MS identity data and lot traceability for qualified B2B procurement. The applicable document set is connected to the selected compound and lot during RFQ review, with independent testing options for buyers who need an additional verification layer.
Sample document pack
How Pepti handles batch documents.
Ask for a redacted sample COA format or a current-lot document review. Pepti provides batch-linked COA, HPLC chromatogram and MS identity documentation and aligns the applicable files with the selected compounds during RFQ review.
HPLC chromatogram
HPLC chromatogram support is confirmed by compound and current batch for the production lot, especially for higher-value RFQs.
MS identity profile
MS identity file support is confirmed by compound and current batch for the production lot.
Representative analytical previews
Historical HPLC and LC-MS testing examples.
These protected previews show representative historical analytical results from previously tested Retatrutide samples, including HPLC-UV purity, LC-MS identity confirmation and measured net content. They demonstrate the analytical format and testing capability; they are not current-batch COAs and do not represent every production lot.
Why the public preview is protected
Full-resolution analytical files, report identifiers and applicable batch documents are not published as reusable downloads. Qualified buyers can request the relevant document review privately. A historical preview is reference material only; buyers who require additional confidence may independently test a received trial-order sample or discuss a buyer-designated laboratory for qualified bulk procurement.
Per-batch document pack
What is confirmed during RFQ review.
Pepti provides a mature COA / HPLC / MS documentation workflow. During RFQ review, the applicable files, selected compound, specification and lot reference are aligned before order confirmation.
| Evidence | What buyers see · Purpose |
|---|---|
| Certificate of Analysis (COA) | Current batch certificate with compound identity, purity/assay fields, lot code and document date for the production lot. Baseline procurement file for B2B research buyer, research organization, regulated pharmacy and OEM buyers. |
| HPLC purity | HPLC chromatogram support checked by compound and batch for the production lot. Purity review before purchase and reorder. |
| MS identity | MS identity confirmation checked by compound and batch for the production lot. Identity confirmation for research and OEM use. |
| Water content | Lyophilized vials report water content (typical ≤4%) on the COA. Stability and storage planning. |
| Lot traceability | Lot reference connected to order file, packaging and batch-linked documents. Reorders cite prior lot for continuity. |
| Packaging proof | Vial label, carton text, insert and lot-code placement reflected before production. OEM and repeat-procurement confidence. |
From inquiry to lot file
Four steps. No vague claims.
Synthesis partner review
Compound class, partner file, format and batch-level traceability checked before quoting.
Current batch check
Every production lot includes a batch-linked COA, HPLC chromatogram and MS identity record checked against the selected compound and lot reference before invoice.
Analytical run
HPLC for purity, MS for identity, water for stability. Chromatograms attached to the lot file.
Document & ship
Batch-linked COA / HPLC / MS files, packaging proof and lot sheet compiled, shipment route confirmed.
≤ 4hAvg reply during business hours
≥ 99%HPLC purity target; actual lot result shown in documents
3–7 dSample lot shipping window
10–18 dProduction lot lead time
Production & QC
GMP peptide production, cleanroom fill and analytical QC.
Lyophilized peptides are produced under GMP conditions — controlled synthesis, cleanroom fill and HPLC/MS analysis for the production lot before release.
Buyer-controlled verification
Two practical ways to verify before scaling.
independent peptide testing is available; independent third-party testing is available for peptide supplier verification and independent third-party peptide testing can verify peptide supplier before bulk order. For a small first order, buyers can independently test a received sample at a laboratory they trust. For a qualified bulk RFQ, a buyer-designated laboratory, intended-lot sample and analytical panel can be coordinated privately, helping buyers verify peptide supplier before bulk order.
Trial order + local test
Receive the actual product, review batch-linked COA HPLC MS records, select the sample and send it to an independent laboratory before moving to a larger order.
Qualified bulk verification
Align the selected laboratory, test panel, intended lot and commercial order plan before testing begins.
FAQ
Questions buyers ask before placing a quote.
Do you confirm COA before payment?
Yes. Pepti provides batch-linked COA, HPLC chromatogram and MS identity documentation through its batch-document workflow. The applicable current-lot document set is confirmed during RFQ review.
Can I get a sample COA before placing an order?
Yes. Buyers can request a redacted sample COA format or a review of the applicable current-lot document set during RFQ review. Generic or historical COAs are not presented as current-lot documents.
What is your HPLC purity target?
Production lots target ≥99% HPLC purity; the actual lot result is shown in that lot's documents. COA summarizes batch results, HPLC supports purity review, and MS supports identity. HPLC purity alone does not prove fill quantity, sterility, endotoxin or suitability for any use.
Do you provide third-party testing?
Independent third-party testing is available for qualified RFQs. Many buyers start with a sample lot, review batch documents, use independent third-party peptide testing, then scale. Cost and turnaround depend on the assay set.
How are lot codes structured?
Compound prefix + lot serial (e.g. BPC-10-2026Q2-A). The full lot-code structure is locked at packaging-proof step for repeat OEM supply.