Research Handling Guidance

Before reconstitution, allow both the lyophilised peptide and your chosen diluent to settle at normal laboratory room temperature. Equalising temperatures in this way supports the structural stability of the compound while it goes into solution.

Diluents and reconstitution solutions are purchased separately.

Research compound

PT-141

Name: PT-141
Brand: Regent Peptides
SKU: pt-141
Availability: InStock

£36.00/ 10mg vial

Bremelanotide, cyclic melanocortin receptor agonist

PT-141 (bremelanotide) is a cyclic heptapeptide analogue of alpha-melanocyte-stimulating hormone and a metabolite of Melanotan II. It is an agonist at melanocortin receptors, with published activity at MC4R and MC3R, and is studied as a central-acting melanocortin probe rather than for pigmentation.

Supplied as a lyophilised powder in 10 mg vials, manufactured in the UK and independently tested batch by batch.

Research use centres on melanocortin receptor pharmacology and central signalling models. Laboratory research use only.

Order before 3pm for same-day UK dispatch on Royal Mail Tracked 24, from £4.99.

Independent testing

All lab reports

HPLC and mass spectrometry on every batch. Certificate of Analysis available on request.

Third-party analysis by Janoshik Analytical. Each certificate is verifiable on the laboratory’s own site.

Manufactured and lyophilised in the UK
Plain, tracked packaging from £4.99
For laboratory research use only

Research Handling Guidance

Diluents and reconstitution solutions are purchased separately.

Technical data

Identity

Sequence: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
Molecular formula: C50H68N14O10
Molecular weight: ≈ 1,025.2 g/mol
Classification: Melanocortin receptor agonist
Form: Lyophilised powder, sealed vial

Identification

Product Name: PT-141
Catalogue Number: pt-141-10mg
Presentation: 10mg per vial

Physical & Chemical Properties

Appearance: White to pale yellow lyophilised powder
Purity: ≥99% by RP-HPLC
Identity: Confirmed by mass spectrometry
Solubility: Readily soluble in bacteriostatic or sterile water

Research Use & Safety

Intended Use: For laboratory research use only. Not for human or veterinary use.
Caution: Handle using appropriate PPE and in compliance with relevant laboratory safety standards.

Storage, Handling & Stability

Storage Temperature, Unopened: -20 °C recommended for long-term storage
Storage Temperature, Opened: -20 °C, minimise freeze-thaw cycles
Shelf Life: 2 years unopened under recommended conditions
Reconstitution Stability: Stable for up to 28 days at 2–8 °C in aqueous solution under sterile conditions
Batch / Lot: Supplied on the batch Certificate of Analysis

For in-vitro laboratory research use only. Not a medicinal product. Not for human, veterinary, diagnostic, therapeutic or in-vivo use.

PT-141 questions

How is PT-141 tested?

Each production batch is sent for independent HPLC purity analysis and mass spectrometry identity confirmation by Janoshik Analytical. The batch reference printed on the vial links to its Certificate of Analysis, which can be viewed on the lab's own verification site.

How is PT-141 supplied?

As a sterile lyophilised (freeze-dried) powder in a sealed glass vial, available in 10 mg vials. Vials are labelled with compound name, strength and batch reference and are dispatched in plain, tracked packaging from the UK.

How should the lyophilised vial be stored?

Unopened lyophilised vials should be kept refrigerated at 2–8 °C, or at −20 °C for long-term storage, protected from light. Once reconstituted, solutions should be refrigerated and used within the period appropriate to the laboratory's own stability data.

Is this for human use?

No. All Regent Peptides products are supplied strictly for in-vitro laboratory research. They are not medicines and are not for human or veterinary use, diagnosis or treatment.

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