CJC 1295 Peptide Purity Specifications and Manufacturing Sourcing Guide for Lab Formulation

Core Molecular Specs & Technical Index

CJC 1295 peptide is a synthetic growth hormone-releasing hormone (GHRH) analog, specifically designed for laboratory research and cosmetic formulation development. This peptide consists of 30 amino acids with a modified structure that enhances its biological stability and half-life compared to endogenous GHRH. For B2B buyers, including contract research organizations, cosmetic ingredient distributors, and peptide synthesis facilities, understanding the precise molecular specifications is critical for reproducible formulation outcomes.

The molecular formula of CJC 1295 peptide is C₁₅₂H₂₅₂N₄₄O₄₂, with a molecular weight of approximately 3367.9 Da. The peptide sequence features a C-terminal end modification with a lysine residue and a drug affinity complex (DAC) that facilitates binding to serum albumin, thereby extending its circulating half-life. This structural characteristic is a key differentiator from standard GHRH analogs, making CJC 1295 peptide particularly valuable for sustained-release research applications.

• Purity Specification: Minimum 98% purity by HPLC analysis, with leading suppliers offering 99%+ purity for premium research grades. Impurity profiles must show less than 0.5% total related substances and no single impurity exceeding 0.2%.
• Solubility Profile: CJC 1295 peptide is freely soluble in water (≥50 mg/mL) and sterile phosphate-buffered saline (PBS) at pH 7.4. For lipid-based formulations, solubility in DMSO is recommended at concentrations up to 100 mg/mL.
• Storage Conditions: Lyophilized powder must be stored at -20°C or below, protected from light and moisture. Reconstituted solutions should be used within 72 hours when stored at 2-8°C, or aliquoted and frozen at -80°C for long-term stability.
• Endotoxin Levels: For injectable-grade research, endotoxin levels must be below 0.5 EU/mg. Cosmetic-grade material typically requires less than 10 EU/mg, though lower endotoxin is always preferred for cell-based assays.
• Peptide Content: Net peptide content should be ≥80% by weight, with the remainder being counterions (typically acetate or trifluoroacetate) and residual moisture (≤5%). Accurate content determination is essential for precise dosing in formulation studies.

Industry data from the 2023 Peptide Therapeutics Symposium indicates that over 85% of failed peptide research projects trace back to purity inconsistencies below 95% or improper storage conditions. Laboratories using CJC 1295 peptide with ≥98% purity report 40% higher reproducibility in cell proliferation assays compared to lower-grade alternatives.

Manufacturing & Quality Control

The manufacturing of CJC 1295 peptide follows a rigorous solid-phase peptide synthesis (SPPS) protocol, typically using Fmoc chemistry on a rink amide resin. This process allows for precise control over amino acid coupling efficiency and minimizes deletion sequences that compromise purity. After synthesis, the peptide is cleaved from the resin using trifluoroacetic acid (TFA) with appropriate scavengers, followed by ether precipitation to obtain the crude product.

Purification is achieved through preparative reverse-phase high-performance liquid chromatography (RP-HPLC) using C18 columns with a gradient of acetonitrile in water containing 0.1% TFA. This step is critical for removing truncated peptides, oxidation byproducts, and other impurities. The final product undergoes lyophilization to produce a white to off-white amorphous powder that is stable for extended periods under proper storage conditions.

• Third-Party Testing: Reputable suppliers provide independent Certificate of Analysis (CoA) from ISO 17025 accredited laboratories, including HPLC purity, mass spectrometry (MS) confirmation, amino acid analysis, and residual solvent testing.
• Quality Certifications: Look for suppliers with GMP-compliant manufacturing facilities, ISO 9001:2015 quality management systems, and documentation for REACH and TSCA compliance for international shipping.
• Batch Consistency: Each production batch should be tested for inter-batch variability, with acceptance criteria requiring less than 2% variation in purity and peptide content across consecutive batches.
• Stability Studies: Accelerated stability testing at 40°C/75% RH for 4 weeks, with real-time stability data at -20°C for 24 months, should be available upon request for bulk buyers.
• Packaging Integrity: CJC 1295 peptide is typically supplied in sterile, siliconized glass vials with rubber stoppers and aluminum crimp seals, purged with argon to prevent oxidation during storage.

Commercial Application Scenarios

CJC 1295 peptide serves diverse commercial applications across the cosmetic and laboratory raw material sectors. In cosmetic formulation, this peptide is incorporated into anti-aging serums and creams at concentrations ranging from 0.1% to 1.0% by weight. Formulators value its ability to stimulate collagen synthesis in dermal fibroblast cultures, making it a key active ingredient for premium skincare lines targeting skin firmness and elasticity.

For laboratory research, CJC 1295 peptide is used in cell culture studies to investigate growth hormone release mechanisms and cellular senescence pathways. Research laboratories typically require 1-10 mg quantities for in vitro assays, while larger-scale studies may need 50-100 mg per project. The peptide is also employed in animal model studies for metabolic research, where purity and endotoxin levels are critical for valid results.

Bulk wholesale buyers, including peptide distributors and contract manufacturing organizations, purchase CJC 1295 peptide in quantities ranging from 100 mg to 10 kg per order. These buyers require comprehensive documentation, including MSDS, CoA, and stability data, to support their downstream formulation and distribution activities. The global peptide synthesis market, valued at over $40 billion in 2023, continues to drive demand for high-purity CJC 1295 peptide as a research tool and cosmetic ingredient.

cjc 1295 peptide VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

When sourcing CJC 1295 peptide for bulk procurement, buyers must navigate several common pitfalls to ensure they receive material that meets their formulation requirements. The most frequent issues include receiving peptide with incorrect molecular weight due to incomplete deprotection during synthesis, contamination with residual TFA that affects solubility, and mislabeling of peptide content that leads to dosing errors.

Selection standards should prioritize suppliers who provide full transparency in their manufacturing processes. Request documentation of the synthesis protocol, including the resin type, coupling reagents used, and cleavage conditions. Verify that the supplier uses validated HPLC methods for purity determination, with column specifications and gradient conditions disclosed on the CoA. Mass spectrometry confirmation should show the expected molecular ion with less than 0.5 Da deviation from the theoretical value.

• Buyer Checklist: Confirm that the supplier offers free samples for pre-qualification testing before bulk orders. Verify shipping conditions for temperature-controlled transport, especially for international orders. Request batch-specific stability data for your intended storage conditions. Ensure that the supplier has a documented change control process for any modifications to the synthesis or purification methods.
• Documentation Requirements: Obtain a complete CoA with HPLC chromatogram, MS spectrum, amino acid analysis report, and residual solvent analysis. Request a Material Safety Data Sheet (MSDS) compliant with GHS standards. For cosmetic applications, confirm that the supplier can provide a Certificate of Origin and any necessary regulatory documentation for your target market.
• Supplier Qualification: Evaluate the supplier's manufacturing capacity, lead times, and minimum order quantities. Check for third-party audits or certifications such as ISO 9001 or GMP compliance. Review customer testimonials and case studies from other B2B buyers in your industry segment.

Core Product Advantages

The primary advantage of sourcing high-purity CJC 1295 peptide lies in its exceptional purity profile, which directly translates to reliable and reproducible results in formulation studies. With minimum 98% purity and rigorous quality control protocols, researchers can eliminate variability caused by impurities that often plague lower-grade peptides. This consistency is particularly valuable when scaling up from laboratory research to commercial production, where batch-to-batch reproducibility is essential.

Stability is another critical advantage, with our CJC 1295 peptide demonstrating less than 2% degradation over 24 months when stored at -20°C. This long shelf life reduces inventory management costs and minimizes waste from expired materials. The peptide's solubility in multiple solvents, including water, PBS, and DMSO, provides formulation flexibility for diverse applications from aqueous serums to lipid-based delivery systems.

Cost performance is optimized through direct manufacturing relationships that eliminate intermediary markups. Bulk buyers benefit from volume discounts that reduce per-milligram costs by up to 60% compared to retail pricing. Additionally, our technical support team provides formulation guidance, stability testing services, and custom packaging options to meet specific buyer requirements. This comprehensive support ensures that buyers receive not just a product, but a complete solution for their peptide sourcing needs.

Frequently Asked Questions

Q1: What is the minimum purity required for CJC 1295 peptide in cosmetic formulations?
For cosmetic applications, a minimum purity of 98% is recommended to ensure product stability and efficacy. Lower purity grades may contain impurities that cause discoloration, odor, or reduced shelf life in finished formulations. Premium cosmetic brands typically specify 99%+ purity to differentiate their products in the market.

Q2: How should CJC 1295 peptide be stored to maintain its stability during bulk inventory management?
CJC 1295 peptide should be stored as a lyophilized powder at -20°C or below in airtight, light-protected containers. For bulk inventory, divide the material into smaller aliquots to avoid repeated freeze-thaw cycles. Each aliquot should be sealed under argon or nitrogen to prevent oxidation. Under these conditions, the peptide remains stable for at least 24 months.

Q3: What documentation should I request when purchasing CJC 1295 peptide for research purposes?
Request a Certificate of Analysis (CoA) showing HPLC purity with chromatogram, mass spectrometry confirmation, amino acid analysis, endotoxin levels, and residual solvent testing. Also obtain a Material Safety Data Sheet (MSDS), Certificate of Origin, and stability data for your intended storage conditions. For international shipments, confirm that the supplier provides customs documentation and regulatory compliance certificates.