Comprehensive Guide to CJC-1295 With DAC 5mg (Mod GRF with Drug Affinity Complex): Extended Half-Life GHRH Analogue Structure, Pituitary Research Standards, and Analytical Purity
Welcome to Suzhou Lanhai Peptide, your trusted global source for advanced synthetic peptides, amino acid derivatives, and specialized laboratory storage solutions. In modern endocrinology research, steady-state growth hormone axis studies, and advanced pharmaceutical formulation research, investigating long-acting growth hormone-releasing hormone (GHRH) analogues requires absolute precision, verifiable purity, and strict compliance with research standards. When exploring prolonged somatotroph stimulation, albumin-binding pharmacokinetics, and basal growth hormone elevation mechanics, utilizing high-purity CJC-1295 With DAC 5mg is vital for achieving reproducible scientific outcomes.
This comprehensive guide explores the structural sequence, biochemical properties, analytical verification standards, and proper laboratory storage protocols for CJC-1295 With DAC 5mg. By examining real-world industry benchmarks and analytical chemistry standards, we outline why optimized sourcing and handling are fundamental to advanced metabolic and endocrine research.
1. Understanding CJC-1295 With DAC: Structure, Mechanism, and Research Scope
CJC-1295 with DAC (Drug Affinity Complex) is a synthetic 29-amino acid peptide analogue of human growth hormone-releasing factor (GRF 1-29) featuring targeted amino acid substitutions for enzymatic stability, coupled to a maleimide-reactive chemical linker.
The Mechanism of Action in Biomedical Research
In contemporary biochemical and pharmacological investigations, CJC-1295 With DAC is examined for several key cellular pathways:
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The Drug Affinity Complex (DAC) Mechanism: The reactive group on the DAC moiety covalently binds to circulating endogenous serum albumin in vivo. This prevents rapid renal clearance and enzymatic degradation by dipeptidyl peptidase-4 (DPP-4).
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Extended Terminal Half-Life: By binding to albumin, CJC-1295 with DAC achieves a markedly extended terminal half-life of approximately 6 to 8 days, facilitating continuous, steady-state stimulation of pituitary GHRH receptors rather than short episodic pulses.
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Basal Endocrine Modeling: In vitro and animal model research evaluates its utility in maintaining sustained basal growth hormone and insulin-like growth factor 1 (IGF-1) levels over extended experimental intervals.
2. Analytical Verification and High-Purity Synthesis Standards
For institutional buyers, academic researchers, and biotechnology procurement managers, batch verification is paramount. Specialized peptide conjugates featuring covalent linker attachments require rigorous solid-phase peptide synthesis (SPPS), bioconjugation validation, and HPLC purification to ensure structural integrity and high coupling efficiency.
High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS)
Every batch of CJC-1295 With DAC 5mg distributed by Suzhou Lanhai Peptide undergoes rigorous verification via HPLC and MS to guarantee purity levels exceeding 98% to 99%+, ensuring minimal uncoupled precursors, deletion sequences, or degradation byproducts.
Technical Specification Comparison
| Specification Parameter | Standard Research Grade | Premium Analytical Grade |
| Sequence Identity | GRF (1-29) with C-Terminal DAC Linker | GRF (1-29) with C-Terminal DAC Linker |
| Purity (HPLC) | $\ge 98.0\%$ | $\ge 99.2\%$ |
| Formulation | 5mg Lyophilized Powder | 5mg Lyophilized Powder |
| Mass Spectrometry (MS) | Verified Molecular Weight / Conjugation | Verified Molecular Weight / Conjugation |
| Storage Conditions | $-20^\circ C$ desiccated, dark | $-20^\circ C$ desiccated, dark |
3. Laboratory Handling, Reconstitution, and Storage Protocols
Synthetic peptides like CJC-1295 With DAC are supplied as stabilized, vacuum-freeze-dried (lyophilized) powders to maximize shelf-life stability. Proper laboratory handling is essential to preserve peptide integrity upon reconstitution.
Reconstitution Best Practices
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Solvent Selection: Reconstitute lyophilized CJC-1295 With DAC 5mg using sterile bacteriostatic water for injection or analytical buffer solutions in a clean laminar flow hood.
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Avoiding Shear Stress: Introduce solvents gently down the inside wall of the vial rather than forcefully spraying liquid directly onto the lyophilized cake to prevent peptide bond shearing.
Cold-Chain Storage Guidelines
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Dry Powder Storage: Store sealed vials of lyophilized CJC-1295 With DAC at $-20^\circ C$ desiccated away from light and moisture.
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Reconstituted Storage: Once reconstituted, solutions should be kept between $2^\circ C$ and $8^\circ C$ protected from light and utilized within short-term experimental windows to prevent enzymatic degradation or oxidation.
4. Mandatory Research Disclaimer and Compliance
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For Laboratory and Research Use Only: All peptide products offered by Suzhou Lanhai Peptide, including CJC-1295 With DAC 5mg, are strictly intended for in vitro laboratory research, analytical testing, and scientific study. They are not approved for human consumption, clinical trials on humans, veterinary use, or therapeutic self-administration.
5. Frequently Asked Questions (FAQs)
1. What role does the Drug Affinity Complex (DAC) play in CJC-1295?
The DAC covalently binds to serum albumin upon introduction into a biological fluid, significantly extending the peptide’s half-life from minutes to several days.
2. What purity level does Suzhou Lanhai Peptide guarantee for CJC-1295 With DAC 5mg?
Every batch of CJC-1295 With DAC 5mg is backed by analytical documentation confirming an HPLC purity rating of 98% to 99% or higher.
3. How should lyophilized CJC-1295 With DAC 5mg be stored prior to reconstitution?
Vials of dry powder should be stored tightly sealed in a dry environment at $-20^\circ C$ protected from light to maintain structural stability.
4. Are Certificates of Analysis (COAs) provided with orders?
Yes. Every order includes or provides access to batch-specific HPLC and Mass Spectrometry reports to verify purity and molecular weight for institutional compliance.
5. Can CJC-1295 With DAC be used in human clinical applications?
No. All products sold by Suzhou Lanhai Peptide are restricted strictly to laboratory research and development use only and are prohibited from human or clinical application.




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