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Batch-matched certificateOn file, sent on request
HPLC + mass specPurity and identity both measured
Tracked US dispatchOut the door in 1–2 business days
Reshipped freeLost, damaged or stolen in transit

Our most popular compounds

The research peptides labs order most — each third-party tested, with its Certificate of Analysis on file and available on request.

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From synthesis to your bench

Four checkpoints stand between a raw batch and a vial we are willing to sell you. Nothing ships until all four are on paper.

  1. 01

    Batch synthesised

    A single production run under uniform conditions, tracked as a single batch in our records for the rest of its life.

  2. 02

    Sent out for analysis

    A sample goes to an accredited third-party laboratory — identity confirmed by mass spectrometry, purity measured by HPLC. We do not grade our own work.

  3. 03

    Certificate issued to the batch

    Results are written against that exact batch, not the product line. If a batch misses spec, it is not released — there is no second-tier stock.

  4. 04

    Certificate published with the compound

    The certificate for that batch is published on the product page — identity, purity and analysis date, readable before you order and still there years later.

This is what arrives with your order

Most suppliers print a purity number on a banner. We would rather show you the document it comes from. Below is the shape of a real release record — every field is tied to one batch, and yours is on file before the vial ever ships.

  • Identity confirmed by mass spectrometry against the calculated mass
  • Purity measured by HPLC, reported with the method conditions
  • Appearance recorded at release inspection
  • Batch reference recorded against your order
Specimen — illustrative layout3rd-party
CompoundBPC-157
Batch reference—————
Identity (MS)Conforms to theoretical mass
Purity (HPLC)≥ 99%
AppearanceWhite lyophilised powder
Analysis dateper batch
Field layout shown for illustration. Figures on your certificate are the measured values for your batch.

Researcher Community

Connect with fellow researchers, share peer insights, and discuss peptide research applications.

99%+ Purity per Batch CoA

Every batch tested by accredited labs via HPLC and Mass Spec — its Certificate of Analysis is already on file.

Delivery, guaranteed

Lost, damaged, or stolen on the way? We reship your order at no cost — protection is included automatically.

01Can I see the test data before I order?
Yes. Every compound we list has been analysed by an accredited third-party laboratory before release, and the report for that batch is kept on file. If you want to review the paperwork for a specific batch before purchasing, just ask and we will send it over.
02Does "99% purity" mean 99% peptide by weight?
No — and this trips up a lot of buyers. Purity from HPLC is a relative area percentage: the main peak measured against every other peak the detector sees. Lyophilised material also carries residual water and a counter-ion such as acetate, which are part of the vial's mass but do not appear in that calculation. If your protocol depends on exact peptide mass, ask for peptide content rather than inferring it from the purity figure. We explain this in detail in our guide to purity testing.
03How do I get the Certificate of Analysis for what I received?
It is published on the product page. Every compound we sell has been third-party tested, and its Certificate of Analysis is linked under the product description alongside the purity, identity and analysis date for that batch. Certificates are not printed in the box and our labels do not carry a lot number, so if you need the certificate covering a specific order, send your order number through the COA request form. Our walkthrough on reading a Certificate of Analysis covers what each figure on the report actually proves.
04Which analytical methods do you rely on?
Identity is confirmed by mass spectrometry, comparing the measured molecular weight against the value calculated from the sequence. Purity is measured by HPLC. The two answer different questions — MS tells you it is the right molecule, HPLC tells you how much of the sample is that molecule — which is why credible documentation reports both.
05What is Recon Water, and do I need it?
Recon Water is our bacteriostatic water — sterile water containing 0.9% benzyl alcohol, which slows microbial growth. It is stocked under research supplies so it can be added to the same order rather than sourced separately. Whether your protocol calls for it is your decision to make; we supply the material, not the method.
06How should material be kept once it arrives?
Sealed lyophilised powder holds well in a cool, dark place for short periods. Refrigerate at 2–8°C for medium-term storage, or freeze at −20°C for longer. The detail people most often miss: let a cold vial reach room temperature before opening it, or condensation forms on the powder. Once reconstituted, keep it refrigerated and avoid repeated freeze-thaw cycles. See our storage guide for the full picture.
07Do orders need cold-chain shipping?
No. Lyophilised peptides are stable at room temperature for the length of normal transit, which is precisely why they are freeze-dried. Standard shipping is fine — no ice packs, no expedited cold chain, no surcharge. Most orders leave within one to two business days in discreet, tracked packaging.
08Where do you ship, and what does it cost?
We ship within the continental United States via UPS and FedEx. Orders over $100 ship free; below that, shipping is calculated at checkout. Every parcel is tracked, and the tracking number is emailed as soon as the label is created.
09What happens if a package is lost or arrives damaged?
Shipment protection is included on every order at no charge. If a parcel is lost, damaged, or stolen in transit, send us a photo and we reship it — there is no claims process to fight through. Report delivery problems within seven days so we can act on them quickly.
10Who are you allowed to sell to?
Qualified researchers and institutions, 21 or older, purchasing for in-vitro laboratory work. Everything we sell is for research use only — not for human or veterinary use, not for diagnostic or therapeutic purposes, and not evaluated by the FDA. We do not provide usage guidance, and requests for it are declined. Placing an order confirms you understand and accept those terms.
11Can I return something I have already opened?
All sales are final. Because these are sensitive research materials, we do not accept returns, cancellations, or exchanges once an order is placed — the one exception is a verified manufacturing defect. If an item arrives wrong, missing, or damaged, report it in writing with photos within seven days of delivery and we will make it right. Reconstituted product cannot be returned under any circumstances. Full terms are on the Returns page and in our Terms of Service.
12How do I reach an actual person?
Email our support team and you will normally hear back within one business day. Every message gets a ticket number so nothing gets lost, and if your question relates to an order, having the order number ready speeds things up considerably.

Refer researchers, earn on every order

If colleagues already ask you where to source compounds, make it worth your time: commission on first orders and reorders, volume pricing, and documentation support when you need it.

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New batches, new documentation

We send a short note when fresh batches clear testing, when a compound returns to stock, and when new reference material lands in the guides. Nothing else. Leave whenever you like.

StarBio

Before you enter

StarBio supplies peptides for in vitro and laboratory research only, and sells strictly to qualified researchers and institutions. Confirm both statements below to enter.

By entering, you confirm the above is accurate. Everything here is supplied for laboratory research only — not for human or veterinary use, not for diagnostic procedures, and not evaluated by the U.S. Food and Drug Administration. Full disclaimer.

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