Frequently asked questions.

The manufacturer targets at least 99% purity by HPLC. Catalogue average is at least 99.7%. The actual measured purity for each batch is recorded on its Certificate of Analysis, downloadable from any product page.

An independent third-party lab runs reversed-phase HPLC against a reference standard for purity and a separate pH measurement on aqueous solution. Two certificates per lot. Both downloadable on the product page before the pen ships.

The Certificate of Analysis covers HPLC purity and identity. The pH test certificate covers aqueous-solution pH stability. Together they give a fuller picture than either document alone. And you can review both before placing the order.

The independent third-party lab is based in the Czech Republic and runs all release testing. The lab name, batch number and result dates are printed on every certificate.

Every product page in the catalogue has a download link that pulls the most recent batch document. For a specific batch number from an order you placed, use the contact page.

By solid-phase peptide synthesis (SPPS). After synthesis the crude peptide is cleaved from the resin, purified by reversed-phase HPLC, lyophilised, and for pre-filled pens reconstituted and filled under cleanroom conditions.

Sign in, browse the catalogue, add to cart, and complete checkout.

Listed methods are confirmed after the order is recorded.

Listed prices are exclusive of any local import duties or taxes. Any applicable charges from your local customs authority are the importer's responsibility.

The catalogue shows USD, EUR, and GBP. For other currencies, ask on the contact page.

Protocol pricing already builds in research-quantity discounts. For lab-quantity orders beyond standard protocols, use the contact page.

Worldwide to verified institutions. Free express shipping is included on every order. No minimum.

Every order ships the next business day. End-to-end estimates: United Kingdom 2-3 business days, Western Europe 2-3, Southern Europe 2-4, Nordics and Central Europe 2-4, North America 3-5, Middle East 3-5, Asia-Pacific 3-5, Oceania 3-5.

Yes. All packaging is plain. No brand labels, no product names visible on the outside. Customs paperwork describes the contents accurately (UN 3316). The packaging is also 100% recyclable.

Pre-filled pens should be stored at 2-8 C (refrigerated) and protected from direct light. Once the seal is broken, store at 2-8 C. Each product page lists the stability window.

Contact support with the order number. Damaged or carrier-lost packages are re-shipped at no charge.

Use the contact page. Email replies typically come within one business day. Written communication only.

Real people. No chatbots, no scripted decision trees.

We can point you to peer-reviewed references on a compound mechanism, half-life, and typical research dose ranges. We don't provide protocol design or medical advice.

Reply within 12 hours and the order can be adjusted or cancelled and refunded. After dispatch, changes are not possible.

Yes. Once your account is active, the referral link is in your member dashboard. Successful referrals earn member credit usable on any future order.