Dermal & Cosmetic Research

PT-141

Bremelanotide · MC4R agonist

Also known as Bremelanotide, PT141.

A cyclic melanocortin analogue and active metabolite of Melanotan II, studied as a melanocortin-4 receptor agonist.

Current lot: SN-PT1-2606
Purity: 99.21% by HPLC
Tested: Jun 9, 2026
Stocked in: United States, Canada

Synamino Sciences research vial with a silver cap on a teal background

Ships from

Vial size

$34.00

USD · 10 mg · In stock

Qty

Order by 2:00 PM PT for same-day dispatch from Reno, Nevada. 1–3 business days by USPS Priority and UPS. Free shipping over $150.00.

For laboratory research use only. Not for human or veterinary use.

About the compound

PT-141 (bremelanotide) is the des-amide metabolite of Melanotan II. It is used in melanocortin-receptor pharmacology, particularly MC3R and MC4R signalling studies.

Supplied as a lyophilized powder for reconstitution.

Studied inMC4R signalling · Melanocortin pharmacology

Certificate of analysis

The certificate for the lot currently shipping. Every vial in that lot carries the same lot number on its label.

Certificate of analysis

PT-141 · 10 mg

Lot SN-PT1-2606 · tested Jun 9, 2026

99.21%

Purity by HPLC

Labeled: 10 mg
Measured: 10.1 mg
Panel: 6 passed · 2 reported
Laboratory: Independent ISO/IEC 17025 accredited laboratory

Assay	Method	Result	Outcome
Appearance	Visual	White lyophilized powder	Pass
Purity	HPLC · spec ≥ 98%	99.21%	Pass
Net peptide content	HPLC	10.1 mg	Reported
Identity	LC-MS	Confirmed	Pass
Heavy metals	ICP-MS	Not detected	Pass
Sterility	USP <71>	No growth	Pass
Endotoxin	LAL · USP <85>	< 0.05 EU/mL	Reported
Residual solvents	GC-HS	Within limits	Pass

Specification and storage

CAS number: 189691-06-3
Molecular formula: C50H68N14O10
Molecular weight: 1025.2 g/mol
Residues: 7
Sequence: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
Reference record: PubChem entry

Storage

Sealed lyophilized vials are stable at room temperature for short periods; store at 2–8 °C for routine use.
For long-term storage keep sealed vials at −20 °C, protected from light and moisture.
Reconstituted solutions should be refrigerated at 2–8 °C and used within the period defined by your laboratory's protocol.

Literature

Peer-reviewed publications on this compound. Provided for reference; they are not claims about this product.

01
Annals of the New York Academy of Sciences · 2003
PT-141: a melanocortin agonist for the treatment of sexual dysfunction
Molinoff PB, Shadiack AM, Earle D, et al.

Studied alongside

Melanotan II
Cyclic α-MSH analogue
from $32.00
Kisspeptin-10
KISS1R agonist decapeptide
from $36.00

Research notice

PT-141 is supplied for in vitro laboratory research and analytical use by qualified professionals. It is not a medicine, supplement or cosmetic, has not been evaluated by any regulator, and is not for human or veterinary use. Published findings cited on this page are provided for reference and are not claims about this product.