Content equals the label
Purity (%) and content (the actual amount delivered) are not the same thing. We document both, so the amount on the label is the amount you receive — no quiet shortfalls.
B2B Documentation Support
Use this page to align sourcing files, quotation scope, packaging, and buyer-side review before comparing supplier options.
KPV (Lys-Pro-Val) lyophilized research peptide for qualified B2B sourcing, with batch-linked HPLC purity and ESI-MS identity records, custom fill quantity, and documentation review.
Key Review Snapshot
Why buyers trust WUMO
In this market, “99% pure” is often quoted while the amount actually delivered is far less. We keep purity and real content separate, and put both on paper — so KPV (Lys-Pro-Val) Lyophilized Research Peptide Supply is backed by documents you can check.
Research peptide line — typical purity >99.3–99.4%, every batch MS-checked before release.
Purity (%) and content (the actual amount delivered) are not the same thing. We document both, so the amount on the label is the amount you receive — no quiet shortfalls.
Identity and quality are confirmed by batch documentation — COA, plus HPLC / MS where applicable — before material is released.
Ingredient identity (INCI / CAS), specification sheet and SDS are available for review. Match the documents to your quoted batch before you commit.
Documents Available
COA
Batch-level quality summary for buyer-side file review.
Request this file through the inquiry path below.
HPLC
Purity profile reference for the quoted project or batch where available.
Request this file through the inquiry path below.
MS
Identity confirmation support for documentation review where available.
Request this file through the inquiry path below.
SDS
Safety document requested for internal purchasing and handling review.
Request this file through the inquiry path below.
Overview
B2B Review Guide
KPV is a tripeptide, Lys-Pro-Val, supplied here as a lyophilized research peptide raw material for qualified B2B sourcing projects. Fill quantity, vial format, packaging, and documentation scope are set per project. This page describes sourcing and analytical documentation only; it does not describe biological action, end-user application, or product performance.
The batch analysed on 21 July 2026 carries both a purity and an identity record. Both are supplier-side quality control performed in the production laboratory rather than third-party verification; independent confirmation can be arranged separately where authorised.
| Measurement | Result | Method and date |
|---|---|---|
| Purity (RP-HPLC) | 99.01% by area | Shimadzu LabSolutions, UV 220 nm, 21 July 2026 |
| Identity (ESI-MS) | [M+H]⁺ 343.37; [2M+H]⁺ 685.90; [2M+Na]⁺ 707.87 | Waters ZQ2000, electrospray positive mode, 21 July 2026 |
| Molecular weight | 342.43 | Consistent across the protonated, dimer, and sodiated dimer ions |
Small peptides such as KPV commonly appear in an electrospray spectrum as more than the singly protonated ion alone — here the protonated molecule, a proton-bound dimer, and a sodiated dimer are all present, and all three are consistent with the same molecular weight. Agreement across several ion forms is a stronger identity statement than a single peak, because a coincidental match at three different mass values is far less likely than at one.
Purity is an area-percent figure at 220 nm. It reports how clean the material is and is a separate question from content or assay, which reports how much peptide a given fill contains. Batch identifier, retest date, appearance, water content, and counter-ion form are confirmed on the batch-specific COA supplied with a quotation. For background on reading these records, see how peptide identity is confirmed by mass spectrometry.
Documentation a technical procurement team reviewing KPV typically requests includes batch-specific COA, HPLC purity records, ESI-MS identity records, appearance, water content, counter-ion form, and SDS/MSDS. Scope may vary by batch and project; specific values are subject to batch-specific COA and project confirmation.
This page is for qualified B2B technical evaluation and business-side documentation review only. Material is supplied as a raw material for research and laboratory use. This page is not intended for individual purchase, consumer use, or product-use guidance, and WUMO does not provide medical guidance or outcome claims. Final use, importation, labeling, and local compliance are the buyer's responsibility.
An HPLC purity record and an ESI-MS identity record for the supplied batch, alongside the batch-specific COA. The batch analysed on 21 July 2026 returned 99.01% by area at 220 nm, with identity confirmed across three ion forms.
No. Purity by area normalisation reports how clean the material is; content or assay reports how much peptide is present in a given quantity. They are separate measurements and should be reviewed separately before a purchasing decision.
The records described here are supplier-side quality control. Independent third-party verification is a separate exercise and can be arranged where authorised; the two are most useful together.
Fill quantity and vial format are set per project rather than fixed on this page. Share your target quantity and packaging preference and it can be confirmed with MOQ and lead time.
Company and business type, destination market, intended business use, required documentation package, target fill quantity and estimated volume, packaging preference, and required timeline.
Before requesting a quotation, these guides cover the specification and document questions that come up most often on this product.
OEM / Private Label
For finished lyophilized peptide vials with custom labels and packaging -- covering MOQ, sample or pilot evaluation, and batch documentation such as COA, sterility, and endotoxin reports -- see our private label peptide vial (OEM / ODM) service.
Use this form for pricing, technical files, sample requests, or project discussion for this product.
Need COA, SDS/MSDS, or specifications? Choose "Technical document request" in the inquiry form or mention the file name in your message.