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.
A 50mg vial fill specification for SS-31, supplied under qualified B2B technical evaluation with batch-linked HPLC purity and ESI-MS identity records, batch consistency, and lead time planning support.
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 SS-31 50mg Vial 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
Request scope and availability through the B2B inquiry path.
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
A 50mg lyophilized vial fill is the specification supplied on this page. Documentation review takes place under qualified B2B technical evaluation.
The most recent SS-31 batch was analysed on 21 July 2026. Both records below are supplier-side quality control performed in the production laboratory — they are not third-party verification. The two are complementary rather than interchangeable, and buyers who need independent confirmation can arrange it where authorised.
| Measurement | Result | Method and date |
|---|---|---|
| Purity (RP-HPLC) | 99.59% by area | Agilent 1260, UV 220 nm, single injection report, 21 July 2026 |
| Identity (ESI-MS) | [M+H]⁺ 640.72; [M+2H]²⁺ 320.93 | Waters ZQ2000, electrospray positive mode, 21 July 2026 |
| Molecular weight | 639.79 | Both observed charge states convert back to this same weight |
Identity here rests on agreement between two charge states rather than a single peak match: the singly and doubly charged ions independently return the same molecular weight. Purity is an area-percent figure at 220 nm and is a separate question from content or assay — how clean the material is, not how much peptide is in the vial. The chromatographic integration on this report is annotated as manual integration, which is disclosed on the report itself and can be discussed on request.
Figures above describe the analysed batch. The batch identifier, retest date, and any batch-to-batch variation are confirmed on the batch-specific COA supplied with a quotation. For background on how identity, purity, and content differ, see how peptide identity is confirmed by mass spectrometry.
Documentation that a technical procurement team reviewing SS-31 typically requests includes identity records, HPLC purity records, water content, appearance records, and counter-ion form records. 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. This page is not intended for individual purchase, consumer use, or product-use guidance. Final use, importation, labeling, and local compliance are the buyer's responsibility.
From a sourcing standpoint, SS-31 synthesis carries higher procurement-side requirements around batch consistency and identity verification than standard peptides. This page describes that sourcing-side reality.
A 50mg vial fill quantity, supplied as a B2B project specification. It is not a use amount.
Synthesis complexity and batch-level documentation requirements can extend production timelines. Exact lead time ranges are subject to project confirmation.
Controlled or cold-chain shipping options are discussed on a project basis, depending on destination, transit time, and packaging plan.
Batch-specific COA, identity records, HPLC purity records, water content records, and counter-ion form records, with scope subject to project confirmation.
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.