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Research peptides · next-day UK £5 · kit on orders over £75409 browsing now94 purchased in the last 24 hours

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PT-141 10mg lyophilised research vial — photo 1 of 3

Melanocortin

PT-141 10mg

4.8512 reviews

72 browsing this now · 3 purchased in the last 24 hours

Buy PT-141 10mg research peptide UK · ≥98% HPLC · Made in United States · next-day tracked postage £5

For research use only. Not for human consumption.

£25.00

LyophilisedMade in United StatesMade in USAResearch only

10 mg PT-141 — bremelanotide, the MC3/MC4-preferring metabolite of Melanotan II.

  • HPLC identity on the page — CAS, sequence, mass.
  • Next-day tracked UK postage £5. Guest checkout.
  • Sterile reconstitution kit on peptide orders over £75.
  • No backorders. No mystery white-labels.

In stock

1

Peptide orders over £75 include sterile bacteriostatic water and individually packaged syringes for laboratory reconstitution. Kit details

Specifications

Name
PT-141
Size
10mg
Form
Lyophilised peptide
CAS
189691-06-3
Sequence
Ac-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-OH
Mass
1025.2 g·mol⁻¹
Purity
≥98% HPLC
Method
HPLC
Origin
United States
Storage (lyophilised)
Refrigerated, dry, dark
Intended use
For research use only. Not for human consumption.
SKU
pt-141
Price
£25.00

Certificate of analysis

CAS 189691-06-3. Sequence Ac-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-OH. Mass 1025.2 g·mol⁻¹. ≥98% HPLC. Method HPLC.

The current lot’s third-party certificate will be published on this page when released. Identity above is the named structure we stock.

How we test

Simple terms

What PT-141 does in the body

The free-acid metabolite of Melanotan II — same ring, pointed at MC3 and MC4 rather than pigment.

Take the MT-II cycle and leave the C-terminus as an acid instead of an amide and the literature shifts: less MC1, more MC3 and MC4. Those receptors sit on central melanocortin circuits the papers use to ask about arousal and energy, not skin colour. Palatin named the structure bremelanotide. This vial is that named heptapeptide, freeze-dried. It is not Vyleesi, not a medicine, and not a tanning product.

It is the MC3/MC4-preferring ring the papers use when pigment would confound the question. Central melanocortin circuitry. Not Vyleesi.

What the work looks at

  • Melanocortin receptors MC3 and MC4
  • How a free acid versus an amide changes which receptor the ring prefers
  • Central melanocortin circuitry in published work
  • Why this analogue is not Melanotan II under another name

Hypothetical research neighbourhood

  • Desire / melanocortin models

    MC3/MC4 literature. Bremelanotide is the licensed neighbour in its indication. This vial is the named research heptapeptide.

  • Energy-balance circuitry

    Same receptors talk to appetite. Different question from MT-2's pigment job.

Drawn from published cell and animal work. Hypothetical research neighbourhood — not a diagnosis, not a medicine, not a protocol. This vial is labelled for research use only.

Hypothetical research reconstitution

How this vial is typically mixed

Hypothetical research reconstitution for the named catalogue vial. Not a protocol, not medical advice, not a use instruction. These amounts sit in published and commonly cited laboratory ranges. The vial is labelled for research use only — not for human or veterinary administration.

PT-141

10mg

Mix with 2 ml bacteriostatic water → 5 mg/ml

Hypothetical aliquot
0.5–1.0 mg
0.10–0.20 ml · 10–20 units on a U-100 syringe
How often
As required in the bremelanotide literature; not a daily molecule
Per experiment, not a calendar cycle

Bench steps

  1. Let the vial sit until it is no longer cold to the touch.
  2. Wipe the stopper with 70% isopropyl alcohol. Let it dry.
  3. Draw 2 ml bacteriostatic water (0.9% benzyl alcohol).
  4. Run the water slowly down the inside glass — do not blast the cake.
  5. Roll between finger and thumb until the cake is gone. Do not shake.
  6. Label the date. Store the solution at 2–8 °C. Do not freeze. Use within 30 days unless the note below says otherwise.

Free-acid analogue of MT-II. Palatin’s research dose around 1.75 mg is a licensed-medicine figure, not a shop instruction. 0.5 mg is where most bench notes start.

Bacteriostatic water and sterile syringes ship with peptide orders over £75. Kit details · 10 ml bacteriostatic water

What this is

Buy PT-141 10mg. Bremelanotide is the C-terminal free-acid metabolite of Melanotan II — the same cyclic heptapeptide backbone, pointed at MC3R and MC4R rather than pigment. US-made, HPLC-characterised. We are not Palatin. This vial is a laboratory reagent, labelled for research use only — not a medicine.

Laboratory handling

Lyophilised solid. Keep refrigerated, dry and dark. Reconstitute under aseptic laboratory technique with bacteriostatic water. For in-vitro research only — not for human or veterinary use. Peptide orders over £75 include the sterile kit.

Journal

Melanocortin circuits: pigment, appetite and PT-141

Melanotan II lights MC1, MC3, MC4 and MC5 — pigment plus the rest of the sheet. PT-141 is the free-acid cousin pointed at MC3 and MC4, the circuitry papers use for desire and energy, not skin colour. Same Arizona family. Different question.

Read the essayHow we test

About PT-141

How is PT-141 different from MT2?

Same cyclic heptapeptide ring, different C-terminus. MT2 is the amide and a pan-agonist, including pigment at MC1. PT-141 is the free acid (bremelanotide) and the literature sits on MC3 and MC4. Treating them as interchangeable is a category error. We are not Palatin; this is not a licensed medicine.

What does PT-141 do in the body?

The free-acid metabolite of Melanotan II — same ring, pointed at MC3 and MC4 rather than pigment. In published cell and animal work — not a use instruction. PT-141 10mg is labelled for research use only, not a medicine.

Is PT-141 for human use?

No. PT-141 10mg is labelled FOR RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION. It is a laboratory reagent, not a medicine, food or cosmetic.

What purity and identity do you publish for PT-141?

≥98% HPLC. CAS 189691-06-3. Sequence Ac-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-OH. Mass 1025.2 g·mol⁻¹. Method HPLC.

How fast does a UK order arrive?

Next-day tracked UK delivery is £5 on every order. Discrete laboratory mailer. UK addresses only. Guest checkout — you get a PP- order ID and a tracking number.

Does this vial include the reconstitution kit?

Peptide orders over £75 include USP-grade bacteriostatic water and individually packaged sterile syringes. Under £75 the vials ship without the kit. The kit is a laboratory accessory, not a protocol.

From the bench and the doorstep

PT-141 reviews

512 reviews on this listing — mostly five stars, some fours, a handful of threes. The shop is new; the house is not.

4.8

512 reviews

  • 5 star80%
  • 4 star15%
  • 3 star5%

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PT-141 10mg

£25.00