Frequently asked questions

No. You can check out as a guest with just an email address and delivery details. An account is worth creating if you order more than once — it keeps your order history, documentation and delivery details in one place and prefills checkout.

No payment is taken at checkout. When you place an order we confirm stock and shipping, then email an invoice with payment instructions and an expected dispatch date. Nothing is charged until you have seen and accepted that invoice.

No. You can order a single vial. Shipping is free above the threshold shown at checkout, so consolidating a few lines into one order usually works out cheaper than placing them separately, but nothing obliges you to.

Often, yes. The storefront lists 265 products, but our reference catalog runs to roughly 9,700 entries including labeled peptides, antibodies and assay kits. Send a catalog number, CAS number or sequence through the contact form and we will tell you whether we can source it, at what price and on what lead time.

Yes, provided it has not shipped. Email us with your order reference as soon as possible and we will amend or cancel it. Once a shipment is in transit, the returns policy applies instead.

Catalog peptides are assayed to at least 99% by reversed-phase HPLC, with mass spectrometry confirming the expected molecular mass. The exact figure for the lot you receive is on that lot's certificate of analysis; the product page states the specification the lot must meet before release.

Yes. Lot-matched certificates are available on request for any catalog item, before or after ordering. Ask through the contact form and we will send the current lot's documentation, so your QA can clear the material before it ships rather than after it lands.

It does, and this matters more than any headline purity figure. A certificate that cannot be tied to the vial in your hand is not evidence of anything. If a lot number ever fails to reconcile, tell us and we will replace the material.

Yes, on request. The summary certificate is issued as standard; the underlying chromatogram and mass-spectrometry data can be supplied where your documentation requirements call for it.

Keep sealed lyophilized vials at −20 °C, dry and protected from light. Under those conditions the powder is stable for extended periods. Short excursions to room temperature during shipping are expected and do not compromise correctly lyophilized material.

Once in solution, store at 2–8 °C protected from light and work within the planned study window. Solution stability is markedly shorter than that of the sealed powder, and it varies by sequence — peptides with methionine, cysteine or tryptophan residues are generally less forgiving.

Bacteriostatic water is the usual choice for multi-draw vials because the benzyl alcohol suppresses microbial growth between draws. Sterile water suits single-use preparations. Direct the stream down the vial wall rather than onto the powder cake, and swirl rather than shake — agitation causes foaming and shear that can denature peptide in solution.

Yes. The reconstitution calculator works out diluent volume and concentration per syringe unit, the molarity calculator converts between mass, molecular weight, volume and molar concentration, and the unit converter handles mg/mcg/ng and mL/µL. All three are free and run entirely in your browser.

In-stock catalog items are picked and dispatched on the next business day after payment clears. Standard tracked delivery typically arrives in 3–5 business days, with expedited options shown at checkout.

Lyophilized material ships insulated, with cold packs where the format calls for it. Vials are packed to survive normal carrier handling; if anything arrives damaged, photograph it before disposal and contact us.

Our standard service is domestic US shipping. International destinations are handled case by case because import rules for research reagents vary considerably — contact us with the destination before ordering and we will tell you whether we can serve it.

Tell us within seven days of the delivery date shown by the carrier. Damaged material is replaced; lost shipments are traced with the carrier and replaced or refunded once the trace concludes.

No. Every product on this site is supplied strictly as a laboratory reagent for in-vitro research and laboratory experimentation. Nothing here is a drug, food, cosmetic or medical device, nothing is intended to diagnose, treat, cure or prevent any disease, and nothing is for human or veterinary use.

Qualified purchasers acting on behalf of a research institution, laboratory, clinic or comparable organisation. By placing an order you confirm that is the capacity in which you are buying, and that you will handle, store and dispose of the material accordingly.

No, and you should be wary of any supplier that does. We can discuss specification, purity, solubility, storage and format. We do not provide dosing guidance, protocols for human use, or any advice that treats these materials as medicines.

A small number of prescription reference listings appear in the catalog for completeness of the reference range. They are subject to additional verification before any order is accepted, and are listed for reference rather than general sale.