PT 141 Peptide Specifications
| Property | Value |
| Name | PT 141 |
| CAS Number | 189691-06-3 |
| Peptide Sequence | XDHFRWK |
| Molecular Formula | C50H68N14O10 |
| Molecular Weight | 1025.2 g/mol |
| PubChem CID | 9941379 |
| Synonyms | Bremelanotide, 189691-06-3, Bremelanotida, 6Y24O4F92S, PT-141 FREE BASE |
| Vial Size | PT 141 10mg |
| Purity (HPLC) | ≥99.0% |
PT 141 Peptide Key Features
- Research-Use Designation: Engineered exclusively for in vitro laboratory experimentation and life science research applications.
- Lyophilized Peptide Format: Supplied as a highly stable lyophilized (freeze-dried) cake or powder to preserve molecular integrity.
- Strict Purity Standards: Manufactured under stringent quality controls to ensure high analytical purity and consistent experimental replication.
- Melanocortin Receptor Agonist: Serves as a chemical tool for investigating melanocortin receptor pathways (MC3R and MC4R).
- Optimized Packaging: Sealed in clinical-grade borosilicate glass vials under an inert gas atmosphere to prevent oxidative degradation.
- PT-141 Storage Requirements: Requires ultra-low temperature environments for long-term preservation and stabilization of the peptide bonds.
Product Overview
The PT-141 Peptide, structurally called Bremelanotide study peptide, is an artificial cyclic amino acid chain that has actually created considerable rate of interest within the life science research study industry. Initially stemmed from the parent peptide Melanotan II, PT-141 was established to separate certain physical and receptor-binding qualities without the potent pigment-inducing qualities of its predecessor molecule. Structurally, it includes a modified series that does not have the C-terminal amide discovered in some related melanotropic compounds, causing an unique biochemical account throughout research laboratory screening.
In the context of lab research study, the PT-141 research peptide functions as a key device for discovering the complicated style of the main nerve system, particularly the pathways controlled by the melanocortin system. Investigators use this particle to research mobile interactions, receptor down-regulation, and the biochemical waterfalls triggered when certain receptor subtypes are bound. Because the compound acts as a non-selective agonist at multiple melanocortin receptor sites, it supplies a beneficial benchmark for architectural biology and relative pharmacology research studies. As a foundational compound in laboratory possession profiles across the USA, Canada, and Australia, this peptide is made via solid-phase peptide synthesis (SPPS). This methodical production technique ensures that each batch keeps structural uniformity and meets strict logical parameters. For study groups carrying out precise biochemical assays, recognizing the chemical baseline and synthesis history of PT-141 is essential for establishing reliable control groups and lessening variables throughout molecular modeling experiments.
What is PT-141?
Biochemically, PT 141 is categorized as a synthetic heptapeptide with the molecular formula C50H68N14O10 and a molecular weight of approximately 1025.2 Da. It is an energetic metabolite of Melanotan II, specifically customized by changing the C-terminal carboxylic acid group with a hydroxyl team, which essentially moves its binding kinetics and molecular stability.
The historical history of PT-141 dates back to pioneering dermatological and neurochemical studies carried out at the College of Arizona throughout the late 1980s and 1990s. While first investigations concentrated on alpha-melanocyte-stimulating hormonal agent (α-MSH) simulates for ultraviolet radiation defense, researchers discovered that specific abbreviated analogs exhibited unique neurogenic signaling residential or commercial properties totally independent of melanin synthesis. This exploration led to the isolation of Bremelanotide as a standalone topic of study, prompting considerable assessment within clinical techniques concentrated on central nerves receptors and blood-brain barrier leaks in the structure.
PT-141 in Scientific Research
Research laboratory examinations making use of the PT-141 peptide emphasis largely on its communication with a household of G-protein combined receptors known as melanocortin receptors. In speculative configurations, scientists introduce the peptide to cellular societies to map out binding affinities, inner mobile trafficking, and enzyme activation series. Due to its artificial resilience, it is frequently preferred over endogenous ligands, which degrade swiftly under typical assay conditions.
Speculative methods involving PT 141 peptide typically require exact liquid handling and controlled atmosphere bioassays. Researchers study how this substance crosses mobile membrane layers and impacts signal transduction pathways, significantly through the buildup of intracellular cyclic adenosine monophosphate (cAMP). These researches are vital for increasing the current clinical understanding of neurochemical mapping and the broader metabolic or neurological features influenced by melanocortin signaling networks.
Scientific Background
The underlying clinical rate of interest in PT-141 exists within the auto mechanics of peptide signaling and receptor biology. The melanocortin system includes five distinctive receptor subtypes (MC1R via MC5R), each local in different tissues throughout the body and brain. PT-141 demonstrates an engaging binding profile, mainly targeting the MC3R and MC4R subtypes situated within main neural pathways.
PT-141 + MC4R→Gαs Activation→↑ cAMP Production
When the peptide binds to these particular receptors, it starts a conformational change that activates adenylyl cyclase, causing a rise in intracellular cAMP. This additional carrier system controls an array of downstream genetic transcription elements and protein kinases. Existing clinical literature assesses how these cellular events influence systemic homeostasis, neuroprotection, and inflammation inflection. Recurring examinations continue to examine the spatial positioning of the PT-141 molecule during receptor interaction to design even more refined, subtype-specific chemical agents for future life science exploration.
Storage and Handling Guidelines
To protect the structural security of the PT 141 peptide, rigorous compliance with laboratory storage space methods is required. Lyophilized peptides are susceptible to ambient thermal variation and dampness deterioration otherwise handled correctly. Upon arrival, the un-reconstituted vial must be saved in a commercial-grade freezer preserved at -20 ℃ or reduced to stop any type of spontaneous hydrolytic processes.
Dampness and light protection are equally important for preventing peptide bosom. The glass vials feature a vacuum seal to omit humidity; nevertheless, direct exposure to guide ultraviolet light can alter the fragrant side chains of amino acids within the sequence. Therefore, vials must be kept in the dark or in opaque storage boxes.
When preparing for an experiment, the vial needs to be enabled to equilibrate to room temperature before reconstitution or handling. This protects against the condensation of atmospheric wetness onto the lyophilized cake when opened up or penetrated. All research laboratory taking care of practices must utilize aseptic techniques within a licensed laminar circulation hood to maintain sample pureness and eliminate the threat of microbial contamination.
Frequently Asked Questions
What is PT-141?
PT-141 is an artificial heptapeptide analog of alpha-melanocyte-stimulating hormonal agent (α-MSH). It is used within the life science study sector to examine melanocortin receptor signaling and neurochemical pathways in lab setups.
What is Bremelanotide?
Bremelanotide is the structural and chemical name for the PT-141 peptide sequence. In scientific literary works, both terms describe the very same cyclic amino acid substance utilized to investigate MC3R and MC4R receptor communications.
Just how should PT-141 be stored?
In its lyophilized form, the peptide must be kept at -20 ℃ for long-term security. Once reconstituted into a liquid service, it should be stored under refrigeration between 2 ℃ and 8 ℃ and made use of within a brief experimental home window to avoid degradation.
What does lyophilized peptide imply?
Lyophilization is a specialized suspended animation procedure that gets rid of water from the peptide remedy via sublimation. This process changes the fluid substance right into a secure powder cake, significantly prolonging shelf-life and guaranteeing chemical honesty during transport.
Is PT-141 planned for research study use?
Yes, this product is explicitly categorized for research laboratory study and artificial insemination experimentation just. It is purely forbidden from being presented right into human or animal subjects, and can not be used as a medication, artificial additive, or cosmetic.
What is peptide reconstitution?
Peptide reconstitution is the laboratory process of including a sterilized solvent, generally Bacteriostatic Water or sterilized saline, to a lyophilized powder to return it to a fluid state ideal for cellular assays or analytical pipetting.
Why is the purity degree of study peptides crucial?
High purity degrees (≥ 98%) guarantee that experimental data is precise and reproducible. Contaminants or architectural anomalies within a lower-grade peptide sample can compromise assay outcomes and bring about false information baselines.
Can PT-141 be frozen after it has been reconstituted?
Repeated freeze-thaw cycles trigger mechanical stress on peptide bonds, which can lead to quick structural breakdown. It is generally recommended to save reconstituted solutions under refrigeration rather than freezing them once more, or to aliquot the solution right into single-use direct exposures before freezing.
Research Notes
Notice: The chemical and structural details provided on this product page are intended exclusively for educational and informational purposes within the scientific community. PT-141 is designated solely as a laboratory research chemical and is not certified for clinical diagnostic, therapeutic, or human applications. All handling, storage, and utilization of this compound must be performed by qualified professionals inside accredited life science facilities.
Scientific References
- Peer-Reviewed Journals: Academic publications detailing the structural development of melanocortin receptor agonists and the comparative binding affinity of synthetic heptapeptides.
- Research Institutions: Technical data sheets and molecular libraries cataloging cyclic peptide variations derived from parent alpha-MSH structures.
- Scientific Databases: PubChem, ChemSpider, and the National Center for Biotechnology Information (NCBI) listings for structural classification of chemical compounds under CAS registration parameters.
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⚠ Intended Use
All products are intended for in vitro laboratory research use only.
They are strictly prohibited for administration to humans or animals, and must not be used for diagnostic, therapeutic, or clinical applications.
Storage and Handling
Store lyophilized powder at –20°C.
After reconstitution (for laboratory analysis), store at 2–8°C.
Avoid repeated freeze-thaw cycles.
Maintain aseptic technique during handling.





