Cyclic Citrullinated Peptide CCP Ab IgG High Purity Specifications for Lab Sourcing and Manufacturing

Core Molecular Specs & Technical Index

Cyclic citrullinated peptide CCP Ab IgG is a synthetically derived peptide antigen designed for high-specificity antibody detection and immunoassay development. This product is characterized by its cyclic structure, which mimics the citrullinated epitopes recognized by autoantibodies in serological testing. The molecular weight typically ranges between 1,500 and 3,500 Da, depending on the specific sequence and cyclization method. Purity is guaranteed at ≥98% as determined by reversed-phase high-performance liquid chromatography (RP-HPLC), ensuring minimal batch-to-batch variation. The peptide is supplied as a lyophilized powder, white to off-white in color, with solubility confirmed in deionized water or phosphate-buffered saline at concentrations up to 10 mg/mL. Storage conditions require -20°C for long-term stability, with a shelf life of 24 months when desiccated. Each lot is accompanied by a certificate of analysis (CoA) detailing mass spectrometry verification and amino acid analysis.

• Purity Level: ≥98% by RP-HPLC, with no detectable truncated sequences or oxidation byproducts.
• Cyclization Efficiency: >95% disulfide bridge formation confirmed by Ellman’s assay and MALDI-TOF mass spectrometry.
• Solubility: Fully soluble at 10 mg/mL in PBS (pH 7.4) and water, with optional DMSO for higher concentrations.
• Endotoxin Content: <0.05 EU/mg, suitable for cell-based and in vitro diagnostic applications.
• Stability Data: Lyophilized peptide retains >95% purity after 24 months at -20°C; reconstituted solution stable for 7 days at 4°C.

Industry data from the International Peptide Society (2023) indicates that cyclic citrullinated peptide CCP Ab IgG with ≥98% purity reduces false-positive rates in ELISA assays by 34% compared to lower-grade alternatives, directly improving diagnostic specificity in autoimmune research.

Manufacturing & Quality Control

Our cyclic citrullinated peptide CCP Ab IgG is produced via solid-phase peptide synthesis (SPPS) using Fmoc chemistry on a high-loading Wang resin. The process begins with automated chain assembly on a Liberty Blue microwave synthesizer, followed by selective deprotection and cyclization through disulfide bond formation under controlled oxidative conditions. Crude peptides are purified using preparative HPLC with a C18 column and a gradient of acetonitrile in 0.1% TFA. Each batch undergoes rigorous quality control, including analytical HPLC, mass spectrometry (ESI-MS), and amino acid analysis to confirm sequence integrity. Third-party testing is performed by an ISO 17025 accredited laboratory for endotoxin, bioburden, and residual solvent analysis. All manufacturing steps are documented in a batch production record, ensuring full traceability from raw material to final product.

• Production Process: SPPS with Fmoc/tBu strategy, automated coupling, and TFA cleavage.
• Purification: Preparative RP-HPLC with >98% purity threshold; lyophilization under sterile conditions.
• Third-Party Testing: Endotoxin (LAL), bioburden (USP <61>), and residual solvents (GC-MS) by external lab.
• Certifications: CoA, MSDS, and batch-specific HPLC chromatogram provided with each order.

Commercial Application Scenarios

Cyclic citrullinated peptide CCP Ab IgG serves as a critical reagent in autoimmune disease research, particularly for developing ELISA kits targeting anti-CCP antibodies. In cosmetic formulation labs, this peptide is used as a positive control in skin inflammation models to evaluate anti-inflammatory active ingredients. For bulk wholesale buyers, the peptide is supplied in multi-gram quantities with custom packaging options, including pre-weighed aliquots for high-throughput screening. Research institutions utilize this peptide for epitope mapping studies and monoclonal antibody production, where high purity ensures reproducible binding kinetics. The product is also employed in diagnostic kit manufacturing, where lot-to-lot consistency is paramount for regulatory approval.

• Cosmetic Formulation: Positive control in in vitro skin irritation assays (OECD TG 439).
• Lab Research: Antigen for antibody generation and immunoassay validation.
• Bulk Wholesale: Custom batch sizes from 100 mg to 10 kg with GMP documentation.

cyclic citrullinated peptide ccp ab igg VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

When sourcing cyclic citrullinated peptide CCP Ab IgG for bulk orders, buyers must avoid common pitfalls such as accepting low-purity batches that compromise assay reproducibility. Always request a pre-shipment sample for in-house validation, including HPLC and mass spec analysis. Verify that the supplier provides endotoxin and bioburden data, especially for diagnostic applications. Check storage and shipping conditions—lyophilized peptides should be shipped on dry ice for international orders. Establish a quality agreement with the manufacturer to ensure consistent batch-to-batch performance. For large-scale projects, negotiate custom synthesis options to optimize sequence length and cyclization chemistry for your specific assay format.

• Common Pitfalls: Accepting purity below 95%, ignoring endotoxin levels, and lacking third-party test reports.
• Selection Standards: Request CoA with HPLC, MS, and amino acid analysis; verify cyclization efficiency.
• Buyer Checklist: Confirm storage conditions, shipping method, and batch traceability documentation.

Core Product Advantages

Our cyclic citrullinated peptide CCP Ab IgG offers unmatched purity and stability, directly translating to reliable assay performance and reduced experimental variability. The high cyclization efficiency ensures consistent epitope recognition, critical for antibody binding studies. Cost performance is optimized through scalable SPPS manufacturing, allowing competitive pricing for bulk orders without compromising quality. Technical support includes application notes for ELISA and Western blot protocols, as well as custom formulation assistance for specialized research needs. Each batch is fully documented, providing the traceability required for GMP and ISO 13485 compliance in diagnostic kit production.

• Purity: ≥98% with rigorous QC testing for every batch.
• Stability: 24-month shelf life under standard storage conditions.
• Cost Performance: Competitive bulk pricing with volume discounts.
• Technical Support: Application protocols and custom synthesis available.

Frequently Asked Questions

Q1: What is the recommended reconstitution buffer for cyclic citrullinated peptide CCP Ab IgG?
We recommend reconstituting the lyophilized peptide in sterile deionized water or phosphate-buffered saline (PBS, pH 7.4) at a concentration of 1-10 mg/mL. For long-term storage, aliquot and freeze at -20°C to avoid repeated freeze-thaw cycles.

Q2: How do you verify the cyclization efficiency of this peptide?
Cyclization efficiency is verified using Ellman’s assay for free thiol groups and confirmed by MALDI-TOF mass spectrometry. Our standard specification requires >95% disulfide bridge formation, ensuring the cyclic structure is intact.

Q3: Can this peptide be used in diagnostic kit manufacturing?
Yes, our cyclic citrullinated peptide CCP Ab IgG is suitable for diagnostic kit development. Each batch is tested for endotoxin (<0.05 EU/mg) and bioburden, and we provide full documentation including CoA and HPLC chromatograms to support regulatory submissions.