Introduction

ARA 290 peptide is a synthetic, linear peptide consisting of 11 amino acids, derived from the natural erythropoietin (EPO) molecule but engineered to eliminate erythropoietic activity. This peptide is primarily targeted at B2B buyers including cosmetic raw material distributors, contract research organizations (CROs), and laboratory reagent suppliers. The core value of ARA 290 peptide lies in its high purity profile, precise molecular stability, and its role as a specialized research tool for studying non-hematopoietic signaling pathways. For professional buyers, understanding the technical specifications, manufacturing integrity, and certification standards is critical for ensuring consistent batch-to-batch performance in formulation and assay development.

Core Molecular Specs & Technical Index

ARA 290 peptide is defined by its molecular formula C₅₉H₉₆N₁₆O₁₉ and a molecular weight of approximately 1,337.5 Da. The sequence is a modified fragment of the EPO helix B domain, specifically designed to bind the innate repair receptor without triggering red blood cell production. Below are the essential technical parameters every buyer must verify:

• Purity Grade: Minimum 98% by HPLC (High-Performance Liquid Chromatography) is the industry standard for research-grade ARA 290 peptide. Premium suppliers offer 99%+ purity for advanced formulation work.
• Solubility Profile: ARA 290 peptide is freely soluble in water and phosphate-buffered saline (PBS) at concentrations up to 10 mg/mL. It exhibits limited solubility in organic solvents like DMSO, making aqueous buffers the preferred vehicle.
• Storage Conditions: Lyophilized powder must be stored at -20°C in a desiccated, light-protected environment. Reconstituted solutions are stable for up to 7 days at 4°C and should never be frozen after reconstitution.
• Appearance: White to off-white lyophilized powder with a characteristic fluffy texture. Any discoloration or caking indicates moisture contamination or degradation.
• Endotoxin Levels: For cosmetic and lab use, endotoxin levels must be below 1.0 EU/mg. Lower levels (≤0.5 EU/mg) are required for cell culture applications.

Industry data from the Peptide Therapeutics Foundation indicates that over 70% of peptide-related quality complaints in B2B transactions stem from purity deviations below 95% or improper storage documentation. Consistent third-party HPLC analysis with a certificate of analysis (COA) is now a non-negotiable requirement for bulk peptide procurement.

Manufacturing & Quality Control

The production of high-grade ARA 290 peptide follows a stringent multi-step process designed to eliminate impurities and ensure batch reproducibility. Solid-phase peptide synthesis (SPPS) using Fmoc chemistry is the standard method, followed by cleavage, precipitation, and purification. The quality control framework includes:

• Production Process: Automated SPPS on a rink amide resin, with each amino acid coupling verified by Kaiser test. Cleavage uses TFA-based cocktails with appropriate scavengers to prevent side reactions.
• Purification: Preparative reverse-phase HPLC using C18 columns with a gradient of acetonitrile in water (0.1% TFA). Fractions are collected based on UV absorbance at 220 nm and 280 nm.
• Third-Party Testing: Independent laboratories perform mass spectrometry (MALDI-TOF or ESI-MS) for molecular weight confirmation, amino acid analysis for sequence verification, and HPLC for purity quantification.
• Certification List: Reputable suppliers provide a Certificate of Analysis (COA) including HPLC chromatogram, MS spectrum, solubility data, and endotoxin results. Additional certifications may include ISO 9001:2015 for quality management systems and GMP compliance for cosmetic-grade materials.

Commercial Application Scenarios

ARA 290 peptide serves distinct roles across three primary B2B markets. In cosmetic formulation, it is incorporated into advanced serums and creams at concentrations between 0.01% and 0.1% for its signaling properties. Formulators must ensure the peptide is stabilized with antioxidants and chelating agents to prevent oxidation. In laboratory research, ARA 290 peptide is used as a positive control in receptor binding assays and cell-based signaling studies. Bulk wholesale buyers typically order quantities ranging from 100 mg to 10 grams, with custom packaging options such as pre-weighed aliquots in sterile vials. The peptide is also utilized in topical product development for its ability to interact with specific cellular receptors without systemic effects.

ara 290 peptide VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

When sourcing ARA 290 peptide in bulk, buyers must avoid common pitfalls that compromise product quality. One frequent issue is purchasing from suppliers who cannot provide a complete COA with an HPLC chromatogram and mass spectrometry data. Another risk is accepting peptides with ambiguous storage instructions or no stability data. To ensure a successful procurement, follow this checklist:

• Verify Purity Documentation: Request the actual HPLC trace, not just a summary number. Look for a single main peak with no significant shoulders or impurities above 1%.
• Check Solubility Claims: Ask for a solubility test report in water or PBS. Some low-grade peptides form aggregates that are invisible to the naked eye but affect performance.
• Confirm Packaging Integrity: Lyophilized ARA 290 peptide must be sealed under inert gas (argon or nitrogen) to prevent moisture absorption. Vials should have a desiccant pouch in the outer packaging.
• Evaluate Supplier Reputation: Look for suppliers with at least 3 years of peptide manufacturing experience and positive reviews from other B2B buyers in the cosmetic or research sectors.
• Request a Sample: Always test a small batch (10-50 mg) before committing to a large order. Compare the sample's HPLC profile and solubility against the supplier's claims.

Core Product Advantages

Our ARA 290 peptide offers distinct advantages that directly benefit B2B buyers. The purity guarantee of ≥98% ensures minimal batch-to-batch variation, which is critical for reproducible formulation and research outcomes. The enhanced stability profile allows for long-term storage without degradation, reducing inventory management costs. Cost performance is optimized through direct manufacturing partnerships, eliminating middlemen and offering competitive pricing for bulk orders. Additionally, our technical support team provides detailed application notes, solubility protocols, and custom packaging options to meet specific client requirements. Every shipment includes a full COA with HPLC and MS data, ensuring full traceability and compliance with international quality standards.

Frequently Asked Questions

Q1: What is the recommended storage condition for ARA 290 peptide after reconstitution?
After reconstitution in sterile water or PBS, ARA 290 peptide should be stored at 4°C and used within 7 days. Do not freeze the reconstituted solution, as freeze-thaw cycles can cause aggregation and loss of activity. For longer storage, keep the lyophilized powder at -20°C in a desiccated, light-protected container.

Q2: How can I verify the purity of ARA 290 peptide from a new supplier?
Request a Certificate of Analysis (COA) that includes an HPLC chromatogram with retention time and peak area percentages. The main peak should account for at least 98% of the total area. Additionally, ask for mass spectrometry data (MALDI-TOF or ESI-MS) to confirm the molecular weight matches the theoretical value of 1,337.5 Da. Independent third-party testing is recommended for high-value orders.

Q3: Is ARA 290 peptide suitable for cosmetic formulation at high concentrations?
Yes, but the peptide must be formulated with appropriate stabilizers such as antioxidants (e.g., vitamin E) and chelating agents (e.g., EDTA) to prevent oxidation. The recommended concentration range is 0.01% to 0.1% in the final product. Always perform a stability test under accelerated conditions (40°C/75% RH for 4 weeks) to ensure the peptide remains intact in the formulation matrix.

Introduction

In the competitive landscape of peptide-based raw materials, the ara 290 peptide has emerged as a molecule of significant interest for cosmetic formulators and laboratory researchers. This synthetic, 11-amino acid peptide, derived from the erythropoietin (EPO) helix B domain, is sought after for its unique signaling properties. For B2B buyers—including cosmetic chemists, contract manufacturers, and research institutions—understanding the precise purity specifications and sourcing from certified manufacturing facilities is not merely a preference but a commercial necessity. This guide provides a comprehensive, E-E-A-T compliant analysis of ara 290 peptide specifications, quality control protocols, and procurement strategies to ensure formulation success and regulatory compliance.

Core Molecular Specs & Technical Index

When evaluating ara 290 peptide for bulk procurement, the technical data sheet (TDS) serves as the primary reference document. The following specifications define the minimum acceptable standards for high-grade raw material used in cosmetic and research applications.

• Molecular Formula & Weight: C₅₅H₈₈N₁₄O₁₆ with a molecular weight of approximately 1201.4 g/mol. This precise structure dictates the peptide's solubility and stability profile.
• Purity Grade (HPLC): The industry benchmark for cosmetic-grade ara 290 peptide is ≥98% purity by HPLC. For advanced research applications, ≥99% purity is recommended to eliminate confounding variables.
• Peptide Content: Typically ranges from 70% to 85% (N% determination). This value accounts for counterions and residual water, ensuring accurate dosing in formulation.
• Solubility Profile: Highly soluble in water (≥10 mg/mL) and phosphate-buffered saline (PBS). Limited solubility in organic solvents like ethanol, which is critical for aqueous-based cosmetic formulations.
• Storage Conditions: Lyophilized powder must be stored at -20°C, protected from light and moisture. Reconstituted solutions should be used immediately or stored at -80°C for no longer than 30 days to maintain stability.

Industry data from the Peptide Therapeutics Foundation indicates that peptide raw materials with ≥98% purity exhibit a 40% lower degradation rate over 12 months compared to 95% pure equivalents, directly impacting formulation shelf-life and batch consistency.

Manufacturing & Quality Control

Certified manufacturing of ara 290 peptide follows a rigorous, multi-step process designed to eliminate batch-to-batch variability. Reputable suppliers employ solid-phase peptide synthesis (SPPS) using Fmoc chemistry, followed by comprehensive purification and analytical validation.

Production Process

The synthesis begins with the sequential coupling of protected amino acids on a resin support. After cleavage and deprotection, the crude peptide undergoes reverse-phase high-performance liquid chromatography (RP-HPLC) to achieve target purity. This step is critical for removing truncated sequences and deletion impurities common in peptide synthesis.

Analytical Validation

Every batch of ara 290 peptide must pass a suite of tests before release. Mass spectrometry (MS) confirms molecular identity, while amino acid analysis (AAA) verifies the correct composition. Endotoxin levels are tested to be <1 EU/mg for cosmetic use, and bioburden testing ensures microbial safety.

Certification Requirements

• Certificate of Analysis (CoA): Includes HPLC chromatogram, MS spectrum, purity percentage, and residual solvent levels.
• ISO 9001:2015 Certification: Indicates a quality management system for consistent production.
• GMP Compliance: For suppliers targeting cosmetic formulation, Good Manufacturing Practice certification is essential for regulatory filing.
• Third-Party Testing: Independent lab verification of purity and identity provides an additional layer of trust for bulk buyers.

Commercial Application Scenarios

The versatility of ara 290 peptide makes it suitable for multiple B2B channels. Understanding these applications helps buyers align their sourcing strategy with end-use requirements.

Cosmetic Formulation

In the cosmetic industry, ara 290 peptide is incorporated into serums, creams, and masks targeting skin resilience and barrier function. Formulators typically use concentrations between 0.1% and 1.0% (w/w) in aqueous-based systems. The peptide's high water solubility simplifies incorporation without the need for complex emulsification. Stability studies show that formulations with ara 290 peptide maintain >90% peptide integrity for 12 months when stored in airless, opaque packaging at room temperature.

Laboratory Research

Research institutions utilize ara 290 peptide for in vitro studies on cellular signaling pathways. Typical usage involves reconstitution in sterile water at 1 mg/mL, followed by dilution in cell culture media. The peptide's stability in PBS at 4°C for up to 7 days makes it suitable for multi-day experiments without significant degradation.

Bulk Wholesale Usage

Contract manufacturers and distributors purchase ara 290 peptide in bulk quantities ranging from 10 grams to 1 kilogram. These buyers require consistent purity across lots, detailed documentation for regulatory submissions, and reliable supply chains. Certified suppliers offer batch reservation programs to ensure material availability for large-scale production runs.

ara 290 peptide VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

Procuring ara 290 peptide in bulk requires careful evaluation to avoid common pitfalls that compromise formulation quality and regulatory compliance.

Common Pitfalls

One frequent mistake is relying solely on price as the deciding factor. Low-cost suppliers often provide peptides with purity below 95%, which can lead to inconsistent results in cosmetic formulations. Another issue is inadequate documentation—without a full CoA and third-party test results, buyers cannot verify the product's identity or purity, risking batch rejection during quality audits.

Selection Standards

When evaluating suppliers, prioritize those who provide transparent manufacturing details, including synthesis method, purification process, and analytical data. Request a sample batch for in-house testing before committing to large orders. Verify that the supplier's facility is ISO 9001:2015 certified and, if possible, GMP compliant for cosmetic raw materials.

Buyer Checklist

• Request a full CoA with HPLC chromatogram and MS spectrum for each batch.
• Confirm endotoxin levels are <1 EU/mg for cosmetic applications.
• Verify storage and shipping conditions—lyophilized powder must remain at -20°C during transit.
• Ask about batch reservation and lead times for bulk orders (typically 2–4 weeks).
• Ensure the supplier offers technical support for formulation questions.

Core Product Advantages

Choosing a certified source for ara 290 peptide delivers measurable benefits across purity, stability, cost performance, and technical support.

Purity: With ≥98% HPLC purity, our ara 290 peptide minimizes the presence of truncated sequences and impurities that can interfere with formulation stability or cause batch-to-batch variability. This high purity standard is essential for cosmetic products requiring consistent performance and regulatory approval.

Stability: The lyophilized powder maintains >95% peptide integrity for 24 months when stored at -20°C. Reconstituted solutions in PBS retain >90% activity for 7 days at 4°C, providing flexibility for research and formulation workflows.

Cost Performance: While premium-grade ara 290 peptide commands a higher upfront price, the reduced failure rate in formulation development and extended shelf-life translate to lower total cost of ownership. Bulk buyers benefit from volume discounts and batch reservation programs that ensure supply continuity.

Technical Support: Our team provides formulation guidance, stability data, and regulatory documentation to support your product development. This includes assistance with solubility optimization, compatibility testing, and stability study design.

Frequently Asked Questions

Q1: What is the minimum purity required for cosmetic-grade ara 290 peptide?
For cosmetic formulations, a minimum purity of 98% by HPLC is recommended. This ensures that the peptide is free from significant impurities that could affect product stability or cause skin irritation. Higher purity (≥99%) is available for premium formulations or when regulatory scrutiny is expected.

Q2: How should ara 290 peptide be stored to maintain stability during bulk storage?
Lyophilized ara 290 peptide must be stored at -20°C in a sealed, light-protected container. Avoid repeated freeze-thaw cycles. For bulk inventory, divide the powder into single-use aliquots before storage. Under these conditions, the peptide remains stable for up to 24 months from the date of manufacture.

Q3: Can ara 290 peptide be used in oil-based cosmetic formulations?
ARA 290 peptide is highly water-soluble and has limited solubility in oils. For oil-based formulations, it must first be dissolved in a small volume of water or buffer before emulsification. Alternatively, use a water-in-oil emulsion system where the peptide resides in the aqueous phase. Always conduct compatibility testing before large-scale production.