# Buy PT-141 Peptide 10 mg in Australia Supplied by Australian Research Peptides Pty Ltd to laboratories and researchers in Australia, for in vitro research purposes only. Stock is held and dispatched within Australia. Sold in Australia to laboratories and researchers, PT-141 peptide costs $89.99 from Australian Research Peptides for one tamper-sealed 10 mg vial of HPLC-tested freeze-dried powder, in stock for same-day dispatch when paid before 12pm Sydney time each business day. PT-141's 10 mg certificate records 99.953% purity by HPLC. PT-141 is a cyclic heptapeptide, seven amino acids closed into a ring, Ac-Nle-cyclo(Asp-His-D-Phe-Arg-Trp-Lys)-OH, and a non-selective melanocortin receptor agonist binding across MC1R to MC5R. It is studied in melanocortin receptor pharmacology and posted domestically to every state and territory. Laboratory material, never a medicine. In vitro research purposes only. Research context: melanocortin receptor pharmacology. ## Strengths, prices and availability | Strength | Price (AUD) | Availability | SKU | | --- | --- | --- | --- | | 10 mg | $89.99 | In stock | 50406 | ## Certificate of analysis Tested by Janoshik, an independent laboratory, before release. The testing is commissioned by the manufacturer rather than by Australian Research Peptides. Methods: HPLC for purity, mass spectrometry for identity. Each certificate below is the laboratory's own report, published on this site. ### 10 mg - Assayed purity: 99.953% - Measured peptide content: 11.01 mg - Laboratory batch: 2026-06 - Date analysed: 19 June 2026 - Testing laboratory: Janoshik - Certificate: https://www.australianresearchpeptides.au/assets/coa/pt-141-10-coa.png?v=124 Full certificate library: https://www.australianresearchpeptides.au/coa ## Specifications | Property | Value | | --- | --- | | Scientific name | Bremelanotide (PT-141) | | Compound class | Cyclic melanocortin receptor agonist peptide | | Appearance | White to off-white lyophilised powder | | Packaging | Sealed, tamper-evident glass vial | | Storage | Sealed vial below -15 C, away from light and moisture; colder is better for long storage | ## About Research on PT-141 is about the melanocortin receptors. These are five docking points on cells, numbered MC1R to MC5R. PT-141 is an agonist at them, which means it binds a receptor and switches it on. Published receptor-binding data ranks its potency MC1R first, then MC4R, MC3R, MC5R and MC2R. ARP reports that published work and nothing beyond it. PT-141 is bremelanotide. It is a cyclic heptapeptide, so its seven amino acids form a closed loop rather than a strand with two loose ends. Its molecular formula is C50H68N14O10, and the ring is closed by a lactam bridge, a bond that joins the chain back on itself. Australian Research Peptides supplies PT-141 from within Australia and posts it domestically, so no order crosses a border. The vial is glass, sealed and tamper-evident, and the powder inside it is freeze-dried and close to white. That powder is HPLC-tested, and its certificate is published in ARP's CoA library. ARP sells the material for laboratory work in glassware and cell culture, and reports published research rather than issuing its own guidance. ## Questions ### Where to buy PT-141 in Australia? Australian Research Peptides supplies PT-141 within Australia as a single 10 mg lyophilised vial in the Melanocortin Agonists range. Orders completed before 12pm Sydney time on a business day are dispatched that same business day by Express Post or standard tracked post, reaching every state and territory without crossing a border. ### What is PT-141? PT-141 is a synthetic cyclic peptide, an analogue of alpha-melanocyte-stimulating hormone (α-MSH), studied as an agonist at the melanocortin receptors MC1R to MC5R. An agonist of this kind switches a receptor on rather than blocking it. Australian Research Peptides supplies PT-141 as freeze-dried research material to laboratories and researchers, for in vitro research only. ### What is peptide 141? Peptide 141 is how people write PT-141 when the letters and the number get separated. PT141 closed up, pt 141 spaced, and the truncated pt 141 peptid all point at the same 10 mg research vial listed here. The hyphen is typographic: no version of the spelling points to a different compound. ### How does PT-141 work? PT-141 is described as activating melanocortin receptors sitting on the outside of cells. Published binding data ranks its potency MC1R, then MC4R, MC3R, MC5R and MC2R, so it is called non-selective. Each of the five is a G-protein-coupled receptor, which passes its signal into the cell through a G protein. Australian Research Peptides reports that receptor pharmacology and nothing beyond it. ### What exactly is supplied in a PT-141 vial? A PT-141 vial contains the PT-141 peptide as a freeze-dried solid and nothing else: no diluent, no carrier, no preservative and no second peptide. The milligram figure on the listing is the weight of peptide in the glass, under a tamper-evident seal. Anything needed to bring it into solution is chosen by the laboratory and is not part of the vial. ### How many amino acids are in PT-141? Seven amino acids make up PT-141, which is why it is called a heptapeptide. Those seven are joined head to tail into a ring instead of a strand with two loose ends. Chemical registries write the sequence as Ac-Nle-cyclo(Asp-His-D-Phe-Arg-Trp-Lys)-OH. Seven is a fact about the molecule, not about the vial. How many milligrams of powder the vial holds is a separate figure entirely. ### What does ARP publish about PT-141? Australian Research Peptides publishes what a PT-141 vial holds, the batch certificate with its measured purity, and how a solution is made from the powder. It publishes no usage guidance of any kind, because PT-141 is supplied as a bench reagent for in vitro laboratory research. ### Is it normal for a PT-141 vial to look empty? Yes — PT-141 is dried at ten milligrams as a ring-closed peptide, and cyclic molecules of that weight settle into a compact pale wafer which hides against clear glass. Overhead light washes the deposit out completely, while light angled from the side brings it back. Quantity is established by weighing at fill, never by how full a container looks to a buyer opening it. ### How should PT-141 be stored? Store PT-141 in its sealed, tamper-evident vial, kept cold, dark and dry. Bachem's handling guidance puts freeze-dried peptide below -15 C for long storage, and colder again is better. Let the vial reach room temperature before you open it, so moisture does not settle onto the powder. A PT-141 solution is short-lived once made, and peptide solutions are not meant for long keeping. ### How do you reconstitute PT-141? Add a suitable diluent to the PT-141 vial slowly, running it down the inside of the glass. Do not aim the stream straight at the powder. Swirl the vial gently and let the solid dissolve on its own. Shaking whips air through it and helps nothing. Wait until the liquid runs clear before any further work. The volume chosen fixes the concentration of the PT-141 solution. ### How long does reconstituted PT-141 keep? A mixed PT-141 vial sits at 2–8 °C for a maximum of twelve weeks under Australian Research Peptides' published condition, and anything held past that belongs frozen in aliquots. PT-141 is a ring closed by a lactam bridge — a bond joining the molecule back on itself — and ends in a free acid. The tryptophan inside that ring is the amino acid light acts on, so darkness matters. ### What volume of diluent goes into a PT-141 vial? One PT-141 vial contains 10 milligrams of dry peptide and that mass never changes, whatever volume of diluent is added to it. Australian Research Peptides publishes no fill volume for the vial, so the amount of diluent is a decision for the work rather than something the listing specifies. ### Why is PT-141 cloudy after mixing? Freshly reconstituted PT-141 often looks hazy for a minute or two while air introduced during mixing rises out, and that resolves by itself. Cold contents dissolve sluggishly and can appear the same. What matters is the state roughly ten minutes later at room temperature: a sound PT-141 preparation is clear, with nothing floating in it. Sustained opacity is reason to stop. ### What is PT-141 dissolved in for laboratory work? PT-141 ships as a dry cake of cyclic peptide sealed in glass, so it needs a liquid before laboratory work. The word diluent covers any liquid used to dissolve a dried compound, and PT-141 powder normally goes into an aqueous one. Nothing liquid is packed in the vial. ### Who supplies PT-141 in Australia? PT-141 comes from Australian Research Peptides Pty Ltd, an Australian supplier that catalogues it as PT141 in its Melanocortin Agonists range and posts it only within Australia. The 10mg lyophilised vial is packed and lodged the same business day when an order arrives before 12pm Sydney time, Monday to Friday, then goes out under Express Post or the standard tracked service, bound for any Australian state or territory. It never crosses a border or waits at customs. The batch's HPLC certificate sits in the CoA library. ### How much does PT-141 cost in Australia? PT-141 comes in one vial size only, so there is no second strength to price against it. Its single Australian-dollar figure is carried in Australian Research Peptides' live catalogue record rather than fixed into copy that would go stale on the next reprice. A second vial is charged at the same figure as the first. ### Does a PT-141 order qualify for free shipping in Australia? Three PT-141 vials reach the standard free-post threshold; two do not. Two PT-141 vials plus a second compound from the range also gets there. Express free post begins higher still. Australian Research Peptides reads qualification on the goods value before any discount code is deducted. ### How do I get PT-141 online? PT-141 is supplied online throughout Australia by Australian Research Peptides, which settles by PayID or bank transfer. An order is prepared once the payment is confirmed, then posted from a domestic address. Every vial is supplied sealed and for in vitro research purposes only, with its certificate in the CoA library. ### How long does PT-141 take to arrive in Australia? PT-141 typically takes 2–5 business days to land by standard tracked post, while Express Post shortens that to 1–2 business days for most of Australia, with Western Australia, Tasmania and the Northern Territory quoted at 2–4. Every PT-141 parcel is lodged from an Australian address and stays in the domestic post the whole way. ### How do I pay for PT-141? PayID and bank transfer are the two methods Australian Research Peptides accepts for a PT-141 order. Both leave from the buyer's own bank, so no bank login or password is ever typed into this site, and each is settled from the order confirmation, which carries the reference to quote. ### Is a PT-141 vial dissolved all at once? A 10 mg PT-141 vial is normally dissolved in one step, and the volume added sets the concentration of the solution. Dividing that solution into labelled aliquots for frozen storage keeps the whole batch from being thawed and refrozen repeatedly, and recording the concentration on each label keeps the laboratory record straight. ### Is PT-141 legal in Australia? PT-141 is sold in Australia by Australian Research Peptides for in vitro laboratory research only, and ARP does not supply it as a medicine or a therapeutic good. The TGA regulates therapeutic goods under the Therapeutic Goods Act 1989; PT-141 from ARP is laboratory material, supplied to laboratories and researchers and not for human or animal use. ### Is PT-141 the same as alpha-MSH? PT-141 is not alpha-MSH: alpha-melanocyte-stimulating hormone is a natural 13-amino-acid linear peptide, while PT-141 is a synthetic seven-amino-acid ring built around the same His-Phe-Arg-Trp core, carried in PT-141 as His-D-Phe-Arg-Trp. PT-141 is called an alpha-MSH analogue because it is modelled on that core, and both bind the melanocortin receptors. Australian Research Peptides lists PT-141 only, not alpha-MSH. ### What research is PT-141 used in? PT-141 is used in melanocortin receptor pharmacology, the laboratory study of how ligands bind and switch on the five melanocortin receptors, MC1R to MC5R. Published binding work characterises it as a non-selective agonist across that family. Australian Research Peptides supplies PT-141 for in vitro work of that kind, in glassware and cell culture, and adds no claims of its own to the published pharmacology. ### Is PT-141 banned in sport? PT-141 is not a compound Australian Research Peptides can clear for sport: anti-doping status comes from the Prohibited List published by the World Anti-Doping Agency and applied here by [Sport Integrity Australia](https://www.sportintegrity.gov.au/what-we-do/anti-doping/substance-education), and ARP gives no ruling on any compound in or out of competition. PT-141 is sold only to laboratories and researchers for in vitro work. ### Who is PT-141 for? PT-141 is supplied by Australian Research Peptides to laboratories, universities and independent researchers working on melanocortin receptors, for in vitro research in glassware and cell culture. It is a research compound, not a medicine or a supplement, it is not sold to members of the public for their own use, and ARP issues no guidance on using it. ### Can you legally import PT-141 into Australia? PT-141 ordered from Australian Research Peptides needs no importing: ARP holds and posts PT-141 inside Australia, so no parcel meets Border Force and none waits on clearance, which is why domestic supply is quicker than an overseas order. Anyone importing PT-141 themselves is subject to the TGA's own import conditions. That answers a logistics question rather than a regulatory one: the material and the holder's own obligations are unchanged. ### Is PT-141 tested before it is supplied in Australia? PT-141 goes through HPLC before Australian Research Peptides supplies it. HPLC pushes the sample through a column and measures what share of it is the PT-141 peptide. The figure describes one batch rather than the listing as a whole. A matching certificate is currently published for this product and strength. ### What is the CAS number for PT-141? PT-141's CAS number is 189691-06-3, the registry number PubChem lists for PT-141 as the free base, meaning the peptide on its own without a salt attached. A salt such as an acetate carries a registry number of its own, and Australian Research Peptides has not confirmed which form its PT-141 vial holds, so the number identifies the compound rather than declaring the form sealed in the glass. ### Is PT-141 the same as bremelanotide? Yes, PT-141 and bremelanotide are two names for one molecule. Bremelanotide is the international non-proprietary name used in pharmacology papers, and PT-141 is the development code it was first known by, the string most people type into a search box. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/9941379)'s record CID 9941379 carries both names on a single entry. ### Can I buy PT-141 at Chemist Warehouse? PT-141 is not on the shelf at Chemist Warehouse or at any other Australian pharmacy, because it is research material rather than a pharmacy product. Australian Research Peptides offers PT-141 online in one 10 mg vial of laboratory material, for laboratories and researchers rather than for consumers. ## Also searched as PT141, PT 141, Bremelanotide ## Ordering - Standard post $12.99, free on orders over $199.00 - Express post $16.99, free on orders over $299.00 - Payment: PayID or bank transfer - Dispatched from within Australia; orders do not cross a border --- Product page: https://www.australianresearchpeptides.au/products/pt-141 Shop: https://www.australianresearchpeptides.au/shop