Melanotan 2 COA Lookup: Verify Your Lot Number
Verify the identity, purity, and analytical integrity of your laboratory's Melanotan 2 lot using PX1 Research's transparent documentation system. Enter your unique vial lot number to retrieve comprehensive third-party batch records, high-performance liquid chromatography (HPLC) chromatograms, and mass spectrometry (MS) reports. Every batch is manufactured in USA-based, ISO 17025-accredited facilities to ensure non-clinical research reproducibility.
Quick answer
Verify the identity, purity, and analytical integrity of your laboratory's Melanotan 2 lot using PX1 Research's transparent documentation system. Enter your unique vial lot number to retrieve comprehensive third-party batch records, high-performance liquid chromatography (HPLC) chromatograms, and mass spectrometry (MS) reports. Every batch is manufactured in USA-based, ISO 17025-accredited facilities to ensure non-clinical research reproducibility.
Key takeaways
- In cell culture and animal models studying melanocortin receptor signaling, experimental consistency depends entirely on chemical purity and exact molecular identity.
- Every vial of [Melanotan 2 10mg](/product/mtii-melanotan2-10mg) shipped by PX1 Research features a standardized laboratory label designed for quick inventory tracking and batch validation.
- Retrieving your detailed analytical documentation requires only a few steps through the main PX1 portal.
- A complete analytical report for [Melanotan](/research-peptides/melanotan-2) 2 provides multiple parameters verifying chemical integrity.
The Importance of Lot-Specific Analytical Verification in Peptide Research
In cell culture and animal models studying melanocortin receptor signaling, experimental consistency depends entirely on chemical purity and exact molecular identity. Melanotan 2 (MT-2) is a synthetic cyclic heptapeptide analog of alpha-melanocyte-stimulating hormone (α-MSH). Preclinical studies suggest that MT-2 functions as a potent non-selective agonist of melanocortin receptors MC1R, MC3R, MC4R, and MC5R. Because structural anomalies, residual trifluoroacetic acid (TFA), or synthesis side-products can skew receptor binding assays, accessing a lot-specific Certificate of Analysis (COA) is a mandatory step prior to reconstitution.
PX1 Research maintains a strict policy of lot-level transparency for every compound distributed. Research laboratories evaluating melanocortin pathways require verifiable documentation proving that the compound in hand matches theoretical properties without batch-to-batch drift. By utilizing our live COA library, researchers can cross-examine high-performance liquid chromatography (HPLC) retention times, mass spectra, and endotoxin levels for their exact vial.
How to Locate the Melanotan 2 COA Lot Number on Your Packaging
Every vial of Melanotan 2 10mg shipped by PX1 Research features a standardized laboratory label designed for quick inventory tracking and batch validation. The lot number is a unique alphanumeric code assigned during the final lyophilization and packaging phase within our GMP-compliant facility.
To locate your lot number, inspect the side panel of the glass vial label or the exterior secondary packaging box. You will find a distinct field marked 'LOT:' followed by a sequence (e.g., MT2-202408-01). This string corresponds directly to the individual synthesis run, purification batch, and third-party analytical panel recorded in our central database. Ensure that the lot number printed on the vial matches your physical packing slip before beginning in vitro protocols.
Step-by-Step Guide to Using the PX1 Certificate Lookup Tool
Retrieving your detailed analytical documentation requires only a few steps through the main PX1 portal. Laboratory personnel can query certificates at any time to verify specifications before initiating research workflows.
1. Identify the complete lot number printed on the vial label of your Melanotan 2 supply. 2. Navigate to the central PX1 live COA library. 3. Input the exact alphanumeric string into the search filter. 4. Click 'View Document' to open or download the high-resolution PDF certificate containing raw analytical data, including HPLC integration tables and mass spectrum graphs. If your search yields no immediate result, ensure hyphenation and digits are entered exactly as shown. For custom synthesis batches or legacy inquiries, institutional buyers can submit direct requests through our wholesale lab support desk.
Deconstructing the Certificate of Analysis: Key Metrics Explained
A complete analytical report for Melanotan 2 provides multiple parameters verifying chemical integrity. Understanding each section allows principal investigators to confirm that the reagent meets strict experimental thresholds.
The header section of the COA identifies the product name, molecular formula (C50H69N15O9), theoretical molecular weight (1024.2 g/mol), CAS registry number (121062-08-6), lot number, and manufacture date. Following the identification header, the report is divided into three primary testing domains: purity determination via HPLC, identity confirmation via mass spectrometry, and biological contaminant screening (endotoxin limits and residual solvent analysis).
HPLC High-Performance Liquid Chromatography Peak Analysis
High-Performance Liquid Chromatography (HPLC) is the gold standard method for determining peptide purity and quantifying trace synthesis impurities. In a standard reverse-phase HPLC (RP-HPLC) analysis of Melanotan 2, the sample is passed through a hydrophobic stationary phase column under controlled solvent gradients.
In vitro data indicate that high purity (>99.0%) is necessary to prevent off-target receptor interactions caused by truncated peptide fragments or un-cyclized intermediate species. The HPLC chromatogram included in your COA displays a single dominant peak corresponding to intact cyclic Melanotan 2. The area under the curve (AUC) integration table quantifies the main peak relative to minor background signals. PX1 Research mandates a minimum threshold of 99.0% purity by AUC for all distributed lots, guaranteeing consistent receptor binding kinetics in preclinical models.
Mass Spectrometry (MS) Sequence Identity & Molecular Mass Verification
While HPLC confirms peptide purity, Mass Spectrometry (MS)—specifically Electrospray Ionization Mass Spectrometry (ESI-MS) or MALDI-TOF—verifies exact molecular weight and structural identity. Because diastereomers or closely related sequences may co-elute in HPLC, MS analysis provides definitive chemical validation.
The observed mass-to-charge ratio (m/z) in the report should match the theoretical monoisotopic or average molecular weight of Melanotan 2 (1024.2 Da). The COA displays the primary mass peak alongside any secondary adduct ions (such as sodium [M+Na]+ or protonated species [M+H]+). Matching the observed mass spectrum against theoretical parameters ensures that the peptide has correctly formed its internal lactam bridge, which is critical for its characteristic melanocortin activity.
Endotoxin & Bioburden Standards for Cell Culture Integrity
Bacterial endotoxins (lipopolysaccharides, or LPS) are common contaminants in peptide synthesis that introduce severe confounding variables into cell culture and animal models. Exposure to endotoxins can trigger immune responses, alter cytokine expression, and invalidate receptor activation data in preclinical assays.
PX1 Research conducts Limulus Amebocyte Lysate (LAL) testing on every batch of Melanotan 2. The COA reports endotoxin levels expressed in Endotoxin Units per milligram (EU/mg). Our internal quality assurance standard dictates an endotoxin threshold of <0.01 EU/mg, well below standard acceptable limits for non-clinical research. This level of purity protects cell viability and maintains experimental reproducibility during long-term assays.
Comparative Analysis: Melanotan 2 vs. Related Melanocortin Compounds
Melanotan 2 belongs to a broader class of synthetic melanocortin receptor agonists derived from natural α-MSH. When selecting reagents from our full catalog of research peptides, researchers frequently compare MT-2 against related peptides to determine the optimal ligand for specific receptor subtype studies.
Unlike linear peptide sequences like Melanotan I (Afamelanotide), Melanotan 2 is a shortened, cyclic lactam-bridged analog (Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2). This structural cyclization confers resistance to enzymatic degradation and increases affinity across multiple receptor subtypes. While Melanotan 1 displays higher selectivity for MC1R in skin pigmentation responses, Melanotan 2 exhibits broader cross-reactivity with central MC3R and MC4R pathways. Similarly, synthetic agonists like Bremelanotide PT-141—a metabolite structure derived from MT-2 lacking the C-terminal amide modification—are preferentially selected when isolating specific central nervous system signaling cascades without significant skin melanogenesis effects.
Laboratory Reconstitution & Storage Protocols
Proper handling and storage post-delivery are vital to preserving the purity confirmed on the COA. Melanotan 2 is supplied as a sterile, lyophilized white powder inside sealed glass vials. Lyophilized vials should be stored at -20°C upon receipt to maintain long-term stability.
When preparing the peptide for in vitro experiments, reconstitute the powder using bacteriostatic water or sterile phosphate-buffered saline (PBS). To calculate exact concentration parameters and diluent volumes, utilize our interactive reconstitution calculator. Avoid vigorous vortexing, as mechanical shear stress can disrupt peptide structure; gently swirl the vial until completely dissolved. Reconstituted solutions should be aliquoted and stored at -80°C to prevent freeze-thaw degradation cycles.
The PX1 Research Quality Commitment: ISO 17025 Testing & USA Manufacturing
PX1 Research operates as a premier supplier of laboratory-grade compounds across North America. Every lot of Melanotan 2 is synthesized in modern USA-based facilities adhering to strict GMP guidelines. Third-party testing is conducted independently by ISO 17025-accredited analytical laboratories to ensure unbiased validation.
By maintaining total control over manufacturing, testing, and distribution, PX1 guarantees that every lot lookup yields transparent, reliable data. Orders placed before 12:00 PM PST ship same-day from our fulfillment hubs in California and Arizona. Researchers seeking further technical specifications, raw data files, or batch comparisons can explore our comprehensive peptide research database.
Frequently Asked Questions
Where do I find the lot number on my Melanotan 2 vial?
The lot number is printed directly on the main side label of the glass vial, preceded by 'LOT:'. It is also duplicated on the outer box packaging for easy inventory tracking.
What purity percentage is required for valid Melanotan 2 laboratory research?
PX1 Research requires all Melanotan 2 batches to achieve a minimum of 99.0% purity determined by RP-HPLC peak area integration to minimize experimental variables in cell culture assays.
Why is mass spectrometry (MS) necessary if HPLC purity is already provided?
HPLC measures purity by separating chemical species, but MS confirms exact identity by measuring molecular weight. Both are required to verify that the compound is correctly synthesized and cyclized Melanotan 2.
How does PX1 test for endotoxins in Melanotan 2 lots?
Endotoxin content is quantified using standardized Limulus Amebocyte Lysate (LAL) testing. All released lots must test below <0.01 EU/mg to ensure compatibility with sensitive in vitro models.
What should I do if my lot number does not appear in the online COA database?
If a newly received lot number is not immediately visible in the live library, contact our lab support team directly with your lot number and order ID for immediate certificate dispatch.
How should reconstituted Melanotan 2 be stored in the lab?
Once reconstituted with sterile diluent, solution aliquots should be stored at -80°C for long-term preservation or 4°C for immediate short-term use (less than 7 days) to prevent hydrolytic degradation.
Can I obtain raw HPLC chromatograms and mass spectra for publication references?
Yes. High-resolution PDF certificates containing complete chromatograms, integration tables, and mass spectra can be downloaded directly from the PX1 COA lookup tool.
Is PX1 Melanotan 2 suitable for human or veterinary administration?
No. All products sold by PX1 Research are strictly intended for laboratory research use only. They are not for human, clinical, therapeutic, or veterinary applications.
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