PT-141 (Bremelanotide)

Buy PT-141 UK – 10 mg vials

Looking for PT-141 UK? Ultra Peptides supplies PT-141 (Bremelanotide) as a lyophilised research compound in 10 mg vials (10 mg for £19.99), dispatched from the UK the same working day when you order and pay before 2 pm. A cyclic heptapeptide melanocortin-receptor agonist (MC3R/MC4R), derived from Melanotan II.

What is PT-141 (Bremelanotide)?

PT-141, or bremelanotide, is a cyclic heptapeptide and a metabolite of Melanotan II. It acts mainly as an agonist at the melanocortin-4 and melanocortin-3 receptors in the central nervous system.

It is supplied as a 10 mg lyophilised powder.

PT-141 (Bremelanotide) research overview

Researchers who order PT-141 UK from us typically work in the following areas. All of the work summarised here is preclinical – cell-culture and animal-model research – and is not evidence of any effect in people.

Melanocortin receptor pharmacology

PT-141 is a reference agonist in MC4R signalling studies, including work on hypothalamic pathways.

Comparison with Melanotan II

Unlike Melanotan II, PT-141 has a free carboxylic-acid C-terminus, which changes its receptor profile – a useful contrast in structure–activity research.

For the primary literature, browse published studies on bremelanotide melanocortin at PubMed.

PT-141 (Bremelanotide) specifications

Purity and independent lab testing

Every vial of PT-141 UK is supplied at a minimum of 99% purity, measured by HPLC. We send batches to independent laboratories and publish the certificates on our lab reports page as they are issued. If you need the analysis for the batch you receive, email us your order number and we will send it.

Peptides are synthesised to the published sequence, lyophilised and sealed under controlled conditions, then stored cold and away from light until they are packed for dispatch.

Reconstituting and storing PT-141 (Bremelanotide)

PT-141 (Bremelanotide) arrives as a dry, lyophilised powder. Most researchers reconstitute it with bacteriostatic water, adding the diluent slowly down the inside of the vial and swirling gently rather than shaking. Use our reconstitution calculator to work out the concentration for the volume you add.

Unopened vials keep best frozen at −20 °C, or in the fridge at 2–8 °C for shorter periods, always protected from light. Once reconstituted, keep the solution refrigerated and avoid repeated freeze–thaw cycles – splitting it into aliquots helps. Our storage guide covers shelf life in detail.

Often researched alongside: Kisspeptin-10.

Laboratory handling checklist for PT-141 (Bremelanotide)

• Let the sealed vial reach room temperature before opening, so moisture does not condense on the powder.
• Wipe the rubber septum with 70% isopropyl alcohol and work on a clean surface.
• Add the diluent slowly down the inside wall of the vial and swirl gently until the powder has dissolved – do not shake.
• Label the vial with the concentration, the date of reconstitution and the batch number.
• Keep reconstituted solutions at 2–8 °C, protected from light, and use them within the stability window of your protocol.
• Record lot numbers in your lab notebook so results can be traced back to a specific batch.

Why order PT-141 UK from Ultra Peptides

• We are a UK supplier: everything ships from inside the UK, so there are no customs delays or surprise import charges.
• Independent laboratories test our batches, and the certificates are published openly rather than hidden behind a request form.
• Orders paid before 2 pm on a working day are dispatched the same day with tracking.
• We sell direct only – never through Amazon, eBay or marketplaces – so every vial comes straight from our own stock.
• Real people answer emails, usually within one working day.

Buying PT-141 UK: delivery and payment

Every PT-141 UK order is dispatched from the UK – no customs checks, import duties or border delays. Orders paid before 2 pm on a working day leave the same day by Royal Mail Tracked 48 and usually arrive within 1–3 working days. Delivery costs £4.99, and it is free on orders over £100, together with a free insulated storage box.

Parcels are packed in plain outer packaging with no branding or product names. You can pay by UK bank transfer – we email our account details after you order – or with USDC, USDT or Bitcoin. We never ask for or store card details. Ordering for a lab or institution? See our wholesale pricing.

PT-141 (Bremelanotide) is supplied for in vitro laboratory research only. Not for human or veterinary use. Buyers must be 18 or over and confirm research use at checkout.