Melanotan 2 Peptide Purity Specifications and Manufacturing Standards for Cosmetic Formulation Sourcing

Core Molecular Specs & Technical Index

For B2B buyers in cosmetic formulation and laboratory research, understanding the precise molecular specifications of melanotan 2 peptide is the foundation of quality sourcing. This synthetic tridecapeptide, with a molecular formula of C50H69N15O9 and a molecular weight of approximately 1024.2 g/mol, requires exacting standards to ensure batch-to-batch consistency. The core value for procurement professionals lies in verifying these technical indices before committing to bulk orders.

• Purity Grade: Minimum 98% purity verified by HPLC (High-Performance Liquid Chromatography) with a single peak profile, ensuring no truncated sequences or residual solvents.
• Solubility Profile: Fully soluble in sterile water for injection (WFI) at 1 mg/mL, with a clear, colorless solution free of particulates when reconstituted.
• Stability Parameters: Lyophilized powder stable for 24 months at -20°C; reconstituted solution stable for 7 days at 2-8°C when protected from light.
• Counterion Content: Acetate or TFA salt form with less than 5% counterion by weight, ensuring accurate dosing for formulation.
• Endotoxin Levels: Less than 1 EU/mg, compliant with USP <85> standards for raw materials used in cosmetic compounding.

Industry data from the Peptide Therapeutics Foundation indicates that over 60% of peptide raw material rejections in cosmetic supply chains are due to purity below 97% or improper counterion ratios, directly impacting formulation stability and shelf life.

Manufacturing & Quality Control

The production of melanotan 2 peptide for commercial sourcing follows a rigorous multi-step process designed to eliminate batch variation. Manufacturers employ solid-phase peptide synthesis (SPPS) using Fmoc chemistry, which allows precise control over amino acid coupling efficiency. Each batch undergoes a minimum of three quality control checkpoints before release.

Production Process

Synthesis begins with resin-bound C-terminal amino acids, followed by sequential deprotection and coupling cycles. After cleavage from the resin, the crude peptide undergoes preparative HPLC purification using C18 reverse-phase columns. This step removes deletion sequences and oxidation byproducts, achieving the target purity threshold.

Third-Party Testing Protocol

Every batch of melanotan 2 peptide intended for cosmetic formulation must include a Certificate of Analysis (CoA) from an independent laboratory. This document verifies identity via mass spectrometry (MS), purity via HPLC, and peptide content via amino acid analysis (AAA). Additionally, residual solvent testing ensures compliance with ICH Q3C guidelines for Class 2 and Class 3 solvents.

• HPLC Purity Report: Single peak at retention time 12.4 ± 0.2 minutes with area percentage ≥98%.
• Mass Spectrometry: Observed m/z 1024.5 ± 0.5 Da matching theoretical monoisotopic mass.
• Endotoxin Testing: LAL assay with result <1 EU/mg.
• Bioburden Testing: Total aerobic microbial count <100 CFU/g.
• Certification: ISO 9001:2015 for quality management systems in peptide manufacturing.

Commercial Application Scenarios

Bulk buyers of melanotan 2 peptide typically operate in three distinct commercial environments, each with specific purity and documentation requirements. Understanding these scenarios helps procurement teams align their sourcing strategy with end-use demands.

Cosmetic Formulation

In cosmetic R&D, melanotan 2 peptide serves as an active ingredient in topical serums and creams targeting skin pigmentation modulation. Formulators require peptide with acetate counterion for optimal skin penetration and minimal irritation. Typical batch sizes range from 10 grams to 1 kilogram, with CoA and MSDS documentation mandatory for regulatory filing.

Laboratory Research

Academic and contract research organizations use melanotan 2 peptide for in vitro melanogenesis studies and receptor binding assays. These applications demand purity above 98% with documented batch-to-batch reproducibility. Research buyers often request small aliquots (100 mg to 5 grams) with detailed analytical data for publication support.

Bulk Wholesale Distribution

Wholesale distributors stock melanotan 2 peptide in quantities of 100 grams to 10 kilograms, serving downstream formulators and research institutions. These buyers prioritize competitive pricing per gram while maintaining purity guarantees. They require lyophilized powder in sealed vials with desiccant, shipped with temperature data loggers for cold chain verification.

melanotan 2 peptide VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

Procurement professionals sourcing melanotan 2 peptide for commercial use must navigate common pitfalls that compromise product quality and regulatory compliance. This guide outlines critical selection standards to ensure your investment yields consistent, high-purity material.

Common Pitfalls

One frequent error is accepting purity claims without independent verification. Some suppliers report "98% purity" based on UV detection at 214 nm, which can overestimate true peptide content. Always request HPLC chromatograms with full integration data. Another pitfall is overlooking counterion type; TFA salts can cause formulation instability in cosmetic bases, leading to precipitation or pH shifts.

Selection Standards

When evaluating suppliers of melanotan 2 peptide, prioritize those offering transparent batch documentation. Request a sample for in-house testing before committing to bulk orders. Verify that the supplier uses GMP-compliant facilities and can provide a Drug Master File (DMF) if needed for international shipping. Cold chain logistics are non-negotiable for maintaining peptide integrity during transit.

• Documentation Checklist: CoA, MSDS, HPLC chromatogram, MS spectrum, and stability data.
• Packaging Requirements: Lyophilized in amber glass vials with rubber stoppers and aluminum seals.
• Shipping Conditions: Dry ice or gel packs with temperature monitoring and 24-hour delivery.
• Supplier Audit: Request facility tour or ISO certification copy to verify manufacturing standards.

Core Product Advantages

Our melanotan 2 peptide offers distinct advantages for B2B buyers seeking reliable raw materials for cosmetic formulation and laboratory research. Each batch is manufactured under strict GMP guidelines, ensuring consistent quality across all order sizes.

Purity Assurance: Every batch undergoes dual HPLC analysis with UV and ELSD detection, guaranteeing ≥98% purity with no detectable deletion sequences. This eliminates the need for costly re-purification by downstream users.

Stability Optimization: Our lyophilization process uses controlled freezing rates and secondary drying to achieve residual moisture below 2%, extending shelf life to 24 months. This reduces inventory risk for bulk buyers.

Cost Performance: Direct manufacturing relationships allow us to offer competitive pricing without compromising purity. Volume discounts apply for orders above 100 grams, with custom packaging options available.

Technical Support: Our team provides formulation guidance, stability testing protocols, and regulatory documentation assistance. This ensures seamless integration of melanotan 2 peptide into your product development pipeline.

Frequently Asked Questions

Q: What is the minimum purity required for cosmetic formulation use of melanotan 2 peptide?
A: For cosmetic applications, a minimum purity of 98% by HPLC is recommended to ensure formulation stability and minimize impurities that could cause skin irritation. Lower purity grades may contain truncated peptides or residual solvents that compromise product safety and efficacy.

Q: How should melanotan 2 peptide be stored to maintain stability during bulk inventory?
A: Lyophilized melanotan 2 peptide should be stored at -20°C in a desiccated, light-protected environment. Avoid repeated freeze-thaw cycles by aliquoting into single-use vials. Under these conditions, the peptide remains stable for up to 24 months, ensuring consistent quality for formulation batches.

Q: What documentation should I request from a melanotan 2 peptide supplier for regulatory compliance?
A: Request a Certificate of Analysis (CoA) with HPLC purity data, mass spectrometry confirmation, endotoxin levels, and residual solvent testing. Additionally, obtain a Material Safety Data Sheet (MSDS) and, if available, a Drug Master File (DMF) for international shipments. These documents support regulatory filings and quality audits.