Melanotan 1 60mg — Vial Spec, Reconstitution Math & COA

Overview of Melanotan 1 60mg & Format Availability

In analytical chemistry and preclinical pharmacology, matching compound mass to experimental throughput is critical for maintaining consistent concentration gradients without introducing excess container-handling variables. A 60mg vial format of Melanotan 1 provides high-capacity yield, allowing research teams to prepare standardized working stock solutions for broad assay panels, receptor binding studies, and extended cell culture series.

It is important to note that while PX1 Research maintains technical specifications and calculation protocols for high-mass formats like 60mg, standard laboratory orders are primarily fulfilled using our flagship Melanotan 1 10mg vials. The 10mg format offers optimal stability and flexibility for single-run or low-to-medium volume assays, reducing the risk of peptide degradation from repeated freeze-thaw cycles. Principal investigators seeking custom high-mass fills, bulk packaging, or specialized laboratory allocations can consult our full research peptide catalog or register through our dedicated wholesale lab accounts portal.

Regardless of the physical fill size utilized in your facility, the underlying chemical properties, sequence identity, and melanocortin receptor binding profiles remain identical. Understanding the mass dynamics of a 60mg vial allows researchers to efficiently plan solvent addition, target working concentrations, and long-term storage protocols.

Biochemical Profile & Melanocortin Receptor Dynamics

Melanotan 1 (also designated historically as Afamelanotide or [Ac-Ser-Tyr-Ser-Met-Glu-His-D-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2]) is a synthetic peptide analog of endogenous alpha-melanocyte-stimulating hormone (α-MSH). By incorporating structural modifications—specifically the substitution of D-Phenylalanine at position 7 and N-terminal acetylation—the peptide exhibits enhanced biological half-life and enzymatic resistance against brush-border carboxypeptidases compared to native signaling peptides.

Grounding preclinical evidence demonstrates that Melanotan 1 functions primarily as a potent, non-selective melanocortin receptor agonist. It displays robust affinity across multiple melanocortin receptor subtypes, notably MC1R, MC3R, MC4R, and MC5R. In vitro receptor binding assays indicate that its primary physiological pathway involves high-affinity activation of MC1R on cutaneous melanocytes. Upon binding, Melanotan 1 stimulates transmembrane adenylate cyclase activity, driving intracellular cyclic adenosine monophosphate (cAMP) accumulation.

This cAMP upregulation initiates a downstream signaling cascade, promoting the transcription of microphthalmia-associated transcription factor (MITF) and subsequently elevating tyrosinase activity. Preclinical studies suggest that this cascade increases synthesis of eumelanin relative to pheomelanin, serving as a primary target mechanism for investigating UV photoprotection, cellular repair pathways, and melanogenesis control in non-human models.

Reconstitution Mathematics for 60mg Vials

Accurate dilution mathematics are essential when converting high-mass lyophilized cakes into working stock solutions. Because 60mg represents a substantial quantity of active peptide solute, selecting the correct diluent volume directly dictates final concentration, solution viscosity, and pipetting precision. Researchers commonly utilize sterile Bacteriostatic Water (0.9% benzyl alcohol) or Phosphate-Buffered Saline (PBS, pH 7.4) depending on the sensitivity of downstream cellular assays.

To achieve target concentrations, apply the foundational mass-volume formula: Concentration (mg/mL) = Total Peptide Mass (mg) / Diluent Volume (mL). When reconstituting a 60mg lyophilized cake, standard diluent volumes yield the following concentration profiles:

• 1.0 mL Diluent Addition: 60mg / 1.0 mL = 60.0 mg/mL (60.0 µg/µL stock). This highly concentrated yield is ideal for dense aliquot storage, minimizing freezer space requirements, but requires precise micro-pipetting for sub-microgram dosing in microtiter plates. • 2.0 mL Diluent Addition: 60mg / 2.0 mL = 30.0 mg/mL (30.0 µg/µL stock). Offers a balanced ratio of volume to concentration, facilitating reliable volumetric measurements during serial dilutions. • 3.0 mL Diluent Addition: 60mg / 3.0 mL = 20.0 mg/mL (20.0 µg/µL stock). Provides enhanced volumetric accuracy for mid-scale bench applications while ensuring complete dissolution of the lyophilized matrix.

For complex serial dilution modeling or alternative volume calculations across custom laboratory containers, researchers should utilize our automated reconstitution calculator tool to verify volumetric accuracy prior to liquid handling.

High-Yield Aliquot Planning & Handling Protocols

Reconstituting a single 60mg vial yields a significant volume of active liquid reagent. Leaving large-volume reconstituted solutions in a primary vial subjects the peptide to repeated temperature fluctuations during routine sampling, leading to chemical degradation via hydrolysis or aggregation. Implementing a structured aliquot planning protocol immediately following reconstitution safeguards compound integrity.

Once complete dissolution of the 60mg cake is verified by visual inspection under focused lighting, the master solution should be distributed into single-use, low-binding polypropylene microcentrifuge tubes. For example, a 60mg cake reconstituted in 3.0 mL of diluent (20 mg/mL) can be partitioned into thirty 100 µL aliquots, each containing precisely 2.0 mg of peptide. Alternatively, sixty 50 µL aliquots will yield 1.0 mg per tube.

Aliquots should be flash-frozen using liquid nitrogen or a dry ice/ethanol bath before transfer to primary storage freezer units. Tubes must be clearly labeled with lot numbers, reconstitution date, calculated concentration, and solvent type. By accessing individual aliquots for specific assay runs, researchers completely eliminate the destructive freeze-thaw cycles that compromise secondary and tertiary peptide structures.

Comparative Analysis: Melanotan 1 vs. Related Melanocortin Compounds

When designing melanocortin-focused research protocols, investigators must select the appropriate signaling analog based on receptor selectivity, binding affinity, and downstream physiological target parameters. Melanotan 1 belongs to a broader class of synthetic melanocortin receptor agonists, each engineered with distinct pharmacological profiles.

A comparative assessment of primary research peptides within this category includes:

• Melanotan 1 (MT-1): A linear peptide analog of α-MSH designed for broad melanocortin activation, with non-selective agonist activity featuring pronounced MC1R selectivity. Primary research focus centers on pigmentation pathways and melanocyte responses.

• Melanotan 2 (MT-2): A cyclic heptapeptide analog ([Ac-Nle-cyclo(Asp-His-D-Phe-Arg-Trp-Lys)-NH2]) that exhibits significantly higher central nervous system permeability and enhanced potency at central MC3R and MC4R sub-types compared to MT-1. Frequently evaluated in metabolic and neuroendocrine signaling models.

• PT-141 (Bremelanotide): A hydroxylated active metabolite derivative of Melanotan 2 that acts primarily as a central MC3R/MC4R agonist, utilized extensively in preclinical CNS pathways and vascular responsiveness studies while exhibiting minimal direct impact on MC1R-mediated pigmentation.

Selecting between these compounds depends on whether the experimental model targets peripheral cutaneous pathways (MT-1) or central neuroendocrine networks (MT-2, PT-141). For foundational melanocyte and pigmentation research, MT-1 remains the preferred baseline reference compound.

Lyophilized Powder Storage & Temperature Controls

Lyophilized peptides are susceptible to ambient heat, moisture ingress, and atmospheric oxygen. Maintaining rigorous environmental controls extends shelf life and preserves mass identity over extended storage intervals. PX1 Research packs peptides under inert nitrogen atmospheres in sealed USP Type I borosilicate glass vials to prevent premature degradation.

Upon arrival at the research facility, un-reconstituted 60mg Melanotan 1 vials should be stored immediately in a desiccated freezer environment maintained at -20°C (-4°F) for short-to-medium term storage (up to 12 months), or -80°C (-112°F) for long-term storage (up to 24 months). Vials must be protected from light exposure, as UV radiation can induce oxidation of sensitive amino acid residues, particularly Met and Trp.

Prior to reconstitution, cold vials should be allowed to equilibrate to room temperature (20°C to 25°C) inside a desiccator cabinet for approximately 30–60 minutes. Opening a cold vial in ambient air causes atmospheric moisture to condense rapidly onto the lyophilized cake. This introduced water content can initiate premature hydrolysis and impair solvent dissolution during reconstitution.

Analytical Validation & Lot-Matched COA Verification

High-throughput cellular and biochemical assays demand absolute purity to ensure observed experimental biological effects are attributable strictly to the target peptide and not contaminating secondary fragments or synthesis side-products. PX1 Research enforces rigorous quality control protocols for every production batch.

Every lot of Melanotan 1 undergoes independent validation in an ISO 17025 accredited testing facility. Essential analytical verification includes:

• High-Performance Liquid Chromatography (HPLC): Measures chemical purity percentages, ensuring target compound concentration exceeds 99.0%. Purity profiles confirm the absence of truncated sequences, deletion peptides, or residual protecting groups. • Mass Spectrometry (MS): Electrospray Ionization Mass Spectrometry (ESI-MS) confirms molecular mass identity against theoretical calculations (MW: 1646.85 g/mol), validating exact amino acid sequence construction. • Endotoxin Testing (LAL Assay): Quantitative Chromogenic Limulus Amebocyte Lysate assays verify endotoxin levels fall strictly below standard research limits (<0.05 EU/mg), eliminating pyrogenic interference in delicate cell culture systems.

Researchers can review and download lot-specific analytical documentation directly through our public Certificate of Analysis (COA) portal by matching the lot code stamped on the vial label.

Vial Size Selection: Evaluating 60mg vs. Standard Formats

Determining whether to acquire high-mass formats like 60mg or multiple smaller units (such as 10mg vials) depends directly on trial design, laboratory infrastructure, and usage frequency. While 60mg options provide operational economy for large-scale operations, small-format vials offer strategic handling advantages for low-throughput bench work.

For laboratories conducting high-volume continuous automated screening, multi-plate receptor binding panels, or multi-month animal cohort studies, a 60mg vial reduces container waste, streamlines initial assay preparation, and ensures uniform lot consistency across large sample sizes. It eliminates inter-vial reconstitution variance during a single extensive testing phase.

Conversely, for intermittent assays, pilot feasibility trials, or laboratories without dedicated ultra-low freezer storage (-80°C), utilizing standard 10mg Melanotan 1 vials is highly advantageous. Smaller vials reduce the duration reconstituted solutions spend in storage, mitigating cumulative hydrolysis risks. Facilities seeking guidance on customized volume allocations or scaled supply schedules can explore our wholesale supplier portal for technical support.

Preclinical Research Applications & Assay Paradigms

In vitro and animal models utilizing Melanotan 1 focus heavily on melanocortin receptor activation pathways, cellular signaling kinetics, and photoprotective physiology. Preclinical studies suggest that MT-1 serves as a reliable probe for evaluating receptor selectivity and ligand-induced intracellular trafficking.

Common preclinical research models incorporate Melanotan 1 into:

• Cutaneous Melanogenesis Assays: In vitro cultures of primary human or murine melanocytes are treated with defined concentrations of MT-1 to measure tyrosinase enzyme expression, microphthalmia-associated transcription factor (MITF) stimulation, and total eumelanin deposition. • DNA Repair & Photoprotection Frameworks: In vitro models exposed to ultraviolet radiation (UVA/UVB) evaluate MT-1 mediated cAMP signaling in reducing cyclobutane pyrimidine dimer (CPD) formation and enhancing nucleotide excision repair pathways. • Receptor Transduction Studies: Binding assays using recombinant cell lines expressing human MC1R, MC3R, MC4R, and MC5R assess competitive binding affinities, receptor internalization dynamics, and G-protein coupled receptor (GPCR) desensitization rates.

All investigative procedures must be conducted within controlled laboratory environments in accordance with institutional biosafety guidelines. You can access additional documentation on melanocortin research methodologies in our dedicated scientific research hub.

PX1 Research Quality Commitments & Fulfillment Standards

PX1 Research is dedicated to supplying the scientific community with highly purified, thoroughly verified research compounds. Every peptide lot is manufactured under strict cGMP-compliant laboratory parameters within the United States, adhering to established ISO quality management frameworks.

To preserve peptide integrity during transport, products are packaged in temperature-monitored, light-shielded, climate-controlled containment systems. All orders ship directly from our strategic logistics hubs located in California and Arizona, with same-day shipping applied to all orders confirmed Monday through Friday prior to cutoff times.

By enforcing strict analytical verification via HPLC/MS testing, routine endotoxin screening, and lot-matched COA distribution, PX1 Research provides baseline consistency for sensitive preclinical, biochemical, and cellular investigations.