PT-141 Pre-Mixed Pen 10mg Peptide

PT-141 Pre-Mixed Pen (Bremelanotide) is a high-purity synthetic melanocortin receptor agonist peptide, supplied at ≥98% purity in a convenient pre-mixed, ready-to-use cartridge format. Available exclusively at Direct Anti Peptide for qualified laboratory research applications. For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications.

Product Overview

The PT-141 Pre-Mixed Pen represents a significant advancement in research peptide delivery convenience. Also known as Bremelanotide, PT-141 is a synthetic cyclic heptapeptide analogue of alpha-melanocyte-stimulating hormone (α-MSH). It functions as a non-selective agonist of melanocortin receptors, with particular affinity for MC3R and MC4R subtypes. Research interest in this compound has grown substantially, with published studies investigating its role in sexual arousal pathways, erectile function models, and premenopausal physiological response in controlled laboratory settings. Direct Anti Peptide supplies this compound in a pre-mixed pen system engineered for researcher convenience and reproducibility.

Peptide Structure & Amino Acid Sequence

PT-141 (Bremelanotide) is a cyclic lactam peptide derived from Melanotan II. Its amino acid sequence is: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH. The cyclic structure confers enhanced metabolic stability compared to its linear precursors, making it a robust candidate for extended in vitro and in vivo research protocols. The molecular formula is C₅₀H₆₈N₁₄O₁₀, with a molecular weight of approximately 1025.17 g/mol. The CAS number associated with Bremelanotide is 189691-06-3.

Chemical & Physical Characteristics

• Chemical Name: Bremelanotide / PT-141
• CAS Number: 189691-06-3
• Molecular Formula: C₅₀H₆₈N₁₄O₁₀
• Molecular Weight: ~1025.17 g/mol
• Appearance: White to off-white lyophilized powder (pre-mixed in bacteriostatic water within cartridge)
• Solubility: Soluble in aqueous bacteriostatic solutions
• Format: Pre-mixed cartridge system, ready for laboratory use
• Purity: ≥98% by HPLC

Purity & Analytical Verification (HPLC & MS)

Every batch of PT-141 supplied by Direct Anti Peptide undergoes rigorous third-party analytical testing prior to dispatch. Purity is confirmed at ≥98% using reverse-phase High-Performance Liquid Chromatography (HPLC). Mass Spectrometry (MS) verification confirms molecular identity and rules out peptide degradation or off-target synthesis products. Certificates of Analysis (CoA) are available upon request and reflect lot-specific analytical data, ensuring full traceability for research documentation and publication-quality standards.

Quality Control & Lyophilization Integrity

Prior to pre-mixing, the PT-141 peptide component is produced under controlled synthesis conditions and lyophilized to a stable powder form. Lyophilization removes residual moisture and preserves peptide integrity during transit and storage. The pre-mixed cartridge system integrates the lyophilized peptide with pharmaceutical-grade bacteriostatic water under sterile manufacturing conditions. Each cartridge is sealed and inspected for particulate matter, clarity, and fill volume consistency before packaging. This multi-stage quality control process ensures that researchers receive a product that meets the highest laboratory standards.

Safety, Handling & Laboratory Precautions

PT-141 Pre-Mixed Pen is intended exclusively for use by trained research scientists in properly equipped laboratory environments. Standard laboratory personal protective equipment (PPE) — including nitrile gloves, safety eyewear, and lab coats — should be worn at all times when handling this compound. Avoid inhalation of aerosols. Follow institutional biosafety guidelines and applicable local regulations for peptide research reagents. This compound is not approved for administration to humans or animals and must not be used outside of a controlled research setting.

Reconstitution, Packaging & Storage

The PT-141 Pre-Mixed Pen cartridge arrives pre-filled with the peptide already reconstituted in bacteriostatic water, eliminating the need for manual reconstitution in the laboratory. The pen kit available from Direct Anti Peptide includes: 1 x pre-mixed peptide cartridge, compatible injection pen hardware, disposable needle tips, and a durable transport case for secure storage and portability between laboratory stations. Store the pre-mixed cartridge at 2–8°C (refrigerated) when not in use. Protect from direct light and avoid freeze-thaw cycling. Once in use, follow standard laboratory protocols for open cartridge management and expiry tracking.

Intended Research Use & Market Positioning

PT-141 (Bremelanotide) is one of the most actively studied melanocortin receptor agonists in contemporary peptide research. Published literature documents its investigation across models of sexual dysfunction, central nervous system melanocortin pathway modulation, and receptor binding kinetics. The pre-mixed pen format offered by Direct Anti Peptide is specifically designed for researchers who require a streamlined, reproducible delivery system without the variability associated with manual reconstitution. This product is positioned for academic institutions, pharmaceutical research teams, and independent laboratories seeking to buy PT-141 online at the best price with guaranteed purity.

Ordering, Availability & Fulfillment

Direct Anti Peptide offers PT-141 Pre-Mixed Pen for sale with fast dispatch and reliable international fulfillment. Order now through our secure eCommerce platform to take advantage of competitive pricing. Bulk cartridge packs are available for long-term research programs. All orders are processed with full CoA documentation and discreet, research-compliant packaging. Our customer support team is available to assist with product selection, documentation requests, and order tracking.

Legal & Regulatory Disclaimer

For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications. PT-141 Pre-Mixed Pen is sold exclusively as a laboratory research reagent. Direct Anti Peptide makes no claims regarding therapeutic efficacy, safety for administration, or suitability for any use outside of controlled scientific research. Purchasers are solely responsible for ensuring compliance with all applicable local, national, and international laws and regulations governing the procurement and use of research peptides. This product must not be misused, redistributed, or applied in any manner inconsistent with its research-only designation.