Buy CJC-1295 DAC — USA-Made, COA per Lot
PX1 Research provides laboratory-grade CJC-1295 DAC (Drug Affinity Complex) for qualified academic, clinical, and industrial research settings. Synthesized exclusively within ISO 17025-accredited, GMP-compliant domestic facilities, each lot undergoes rigorous third-party verification to guarantee structural integrity, precise peptide content, and freedom from endotoxins. Researchers seeking consistent performance in preclinical models can rely on our transparent, lot-specific analytical documentation and rapid domestic fulfillment.
Quick answer
PX1 Research provides laboratory-grade CJC-1295 DAC (Drug Affinity Complex) for qualified academic, clinical, and industrial research settings. Synthesized exclusively within ISO 17025-accredited, GMP-compliant domestic facilities, each lot undergoes rigorous third-party verification to guarantee structural integrity, precise peptide content, and freedom from endotoxins. Researchers seeking consistent performance in preclinical models can rely on our transparent, lot-specific analytical documentation and rapid domestic fulfillment.
Key takeaways
- When purchasing reagents for growth hormone signaling assays or metabolic studies, acquiring high-purity peptides with reliable analytical documentation is essential to eliminate experimental variables.
- [CJC-1295](/research-peptides/cjc-1295-no-dac) DAC is structurally derived from the first 29 amino acids of human growth hormone-releasing hormone (GHRH 1-29), optimized through strategic amino acid substitutions at positions 2, 8, 15, and 27.
- The primary focus of preclinical research involving [CJC-1295](/research-peptides/cjc-1295-no-dac) DAC centers on long-term modulation of the somatotropic axis.
- Procuring research peptides from international vendors or secondary resellers presents significant risks to laboratory data integrity.
Introduction: Procuring CJC-1295 DAC for Preclinical Research
When purchasing reagents for growth hormone signaling assays or metabolic studies, acquiring high-purity peptides with reliable analytical documentation is essential to eliminate experimental variables. Researchers who buy CJC-1295 DAC require a synthetic peptide that precisely mimics endogenous growth hormone-releasing hormone (GHRH) while offering extended stability in experimental matrices. CJC-1295 DAC is a modified 29-amino acid peptide derivative that incorporates a maleimido derivative reactive group at the C-terminus, enabling bioconjugation to circulating proteins.
In cell culture assays and animal models, the presence of the Drug Affinity Complex fundamentally alters peptide kinetics compared to native GHRH or short-acting secretagogues. To maintain reproducibility across longitudinal studies, laboratory procurement managers must ensure their supply chain relies on strict analytical verification rather than unverified commercial claims. PX1 Research supplies high-purity CJC-1295 DAC specifically formulated for in vitro and preclinical research applications, accompanied by complete lot-level transparency.
Chemical Structure and Bioconjugation Mechanism of CJC-1295 DAC
CJC-1295 DAC is structurally derived from the first 29 amino acids of human growth hormone-releasing hormone (GHRH 1-29), optimized through strategic amino acid substitutions at positions 2, 8, 15, and 27. These substitutions protect the primary chain against enzymatic cleavage by dipeptidyl peptidase IV (DPP-IV) and other endogenous proteases. The defining structural element of this compound is the addition of a Lys(DAC) residue, which features a 3-maleimidopropionic acid linker covalently attached to the lysine side chain.
Preclinical investigations demonstrate that upon introduction to biological fluids, the maleimido group selectively forms a stable covalent thioether bond with the free cysteine-34 residue of endogenous albumin. This albumin-binding mechanism shields the peptide from renal clearance and enzymatic degradation, effectively transforming the short-lived peptide into a long-acting macromolecular conjugate. Research indicates that this sustained binding enables continuous activation of pituitary GHRH receptors, stimulating pulsatile synthesis and release of growth hormone (GH) and downstream insulin-like growth factor 1 (IGF-1) over extended observation windows.
Preclinical Research Applications: GH/IGF-1 Axis and Tissue Repair
The primary focus of preclinical research involving CJC-1295 DAC centers on long-term modulation of the somatotropic axis. In rodent models, sustained GHRH receptor stimulation leads to elevated mean basal serum growth hormone concentrations and sustained elevations of circulating IGF-1. Researchers utilize this compound within our broader catalog of GHRH analogs to investigate growth factor dynamics, cellular proliferation, metabolic rate adjustments, and collagen synthesis in damaged connective tissues.
In tissue repair and regeneration models, elevated IGF-1 signaling downstream of CJC-1295 DAC administration is correlated with accelerated cellular migration, enhanced satellite cell activation in skeletal muscle, and increased extracellular matrix deposition. In vitro assays using chondrocyte and osteoblast cultures demonstrate that sustained GHRH receptor agonism supports cellular differentiation and survival under oxidative stress conditions. By utilizing a stabilized, long-acting analog, investigators can assess continuous growth factor exposure without requiring frequent repeat dosing protocols in animal research models.
Vendor Quality Comparison: PX1 Research vs. Overseas Suppliers
Procuring research peptides from international vendors or secondary resellers presents significant risks to laboratory data integrity. Overseas suppliers frequently offer low-cost lyophilized powders synthesized in non-GMP certified facilities, lacking verified cleanroom protocols or validated post-synthesis purification steps. Consequently, imported material often suffers from broad batch-to-batch variance, residual trifluoroacetic acid (TFA) salts, partial oxidation, and undisclosed organic impurities.
PX1 Research manufactures all peptides within advanced, domestic ISO 17025-accredited and GMP-compliant facilities. Every batch of CJC-1295 DAC undergoes complete high-performance liquid chromatography (HPLC) purification and mass spectrometry (MS) characterization to verify exact molecular mass and sequence fidelity. While overseas materials are often exposed to extended transport times across unmonitored ambient temperatures leading to peptide degradation, PX1 Research dispatches reagents directly from controlled domestic hubs in California and Arizona, ensuring pristine state arrival at your laboratory.
Endotoxin Verification and ISO 17025 Testing Standards
Bacterial endotoxins—lipopolysaccharides (LPS) derived from Gram-negative cell walls—represent one of the most critical confounders in cellular and animal research. High endotoxin levels induce acute inflammatory cascades, alter receptor expression, and skew immunological and metabolic endpoints, invalidating experimental data. Many overseas suppliers omit endotoxin screening entirely or rely on outdated, non-quantitative testing methods.
At PX1 Research, every production lot of CJC-1295 DAC undergoes quantitative chromogenic Limulus Amebocyte Lysate (LAL) assay testing to verify that endotoxin levels remain strictly below defined research thresholds (<0.01 EU/μg). Qualified laboratories can review comprehensive, lot-specific Certificates of Analysis (COAs) directly through our preclinical peptide research database. This rigorous quality control process guarantees that your research team receives sterile, high-purity compounds suitable for sensitive primary cell cultures and live-animal physiological assays.
Comparative Analysis: CJC-1295 DAC, CJC-1295 No DAC, and Alternative Secretagogues
Selecting the appropriate secretagogue depends directly on the desired kinetic profile of the research study. Comparative preclinical literature highlights key functional differences among common GHRH modifications and ghrelin receptor agonists:
While CJC-1295 DAC utilizes covalent albumin conjugation to extend systemic biological activity over several days, CJC-1295 No DAC (Mod GRF 1-29) lacks the maleimido linker, yielding a brief plasma half-life suitable for studying acute, pulsatile GH release. Alternatively, shorter GHRH fragments like sermorelin acetate mimic native GHRH binding but undergo rapid enzymatic degradation within minutes. When investigating dual-receptor synergy, researchers frequently co-administer GHRH analogs alongside selective growth hormone secretagogues such as ipamorelin to evaluate additive GH secretion without provoking significant cortisol or prolactin release.
Laboratory Handling, Reconstitution, and Storage Protocols
To preserve peptide stability and prevent physical degradation, lyophilized CJC-1295 DAC must be stored under controlled thermal conditions upon delivery. Lyophilized vials should be kept at -20°C for short-term research needs or -80°C for long-term storage, protected from light exposure and humidity.
Reconstitution should be conducted within a certified laminar flow hood using sterile, laboratory-grade solvents. Standard protocols utilize sterile bacteriostatic water (0.9% benzyl alcohol) or sterile physiological saline depending on the downstream assay parameters. When reconstituting, direct solvent down the inner glass wall of the vial rather than directly onto the lyophilized cake, followed by gentle swirl agitation—never vortex or violently shake the vial, as mechanical shear forces can cause peptide aggregation. Reconstituted solution should be aliquoted into polypropylene microcentrifuge tubes to prevent repeated freeze-thaw cycles and stored at 2°C to 8°C for use within 14–21 days.
Logistics, Fulfillment, and Wholesale Procurement
Research timelines demand reliable, predictable logistics. PX1 Research operates dual fulfillment hubs in California and Arizona, allowing us to offer same-day shipping on all domestic orders placed before 3:00 PM EST, Monday through Friday. Reagents are packaged using insulated thermal packaging to defend against ambient temperature fluctuations during transit.
For large-scale academic grants, contract research organizations (CROs), and industrial laboratories requiring bulk reagent quantities, PX1 Research provides dedicated commercial account management. Institutional procurement teams can establish a customized wholesale laboratory account to access volume tier pricing, reserved lot allocations, and custom batch synthesis services with tailored purity specifications.
Frequently Asked Questions
What is the primary difference between CJC-1295 DAC and CJC-1295 No DAC?
The key chemical distinction lies in the presence of the Drug Affinity Complex (DAC)—a maleimidopropionic acid linker attached to a C-terminal lysine. CJC-1295 DAC covalently binds to serum albumin in vivo, extending its biological half-life significantly. CJC-1295 No DAC (Mod GRF 1-29) lacks this complex and exhibits a rapid metabolic clearance profile.
How does PX1 Research verify the purity of CJC-1295 DAC?
Every lot of CJC-1295 DAC undergoes analytical testing using High-Performance Liquid Chromatography (HPLC) to establish chemical purity (>98%) and Mass Spectrometry (MS) to confirm exact molecular weight and structural identity. Lot-specific Certificates of Analysis (COAs) are made available to purchasing institutions.
Are PX1 Research peptides synthesized in the United States?
Yes. All research peptides offered by PX1 Research are synthesized, purified, and packaged within ISO 17025-accredited, GMP-compliant facilities located entirely in the United States.
What endotoxin limits are maintained for laboratory orders?
PX1 Research performs quantitative LAL assays on every peptide production batch. We enforce a strict threshold ensuring endotoxin content remains below 0.01 EU/μg, making our compounds safe for sensitive cell culture assays and animal models.
How should CJC-1295 DAC be stored upon receipt in the lab?
Lyophilized CJC-1295 DAC should be stored at -20°C for medium-term storage or -80°C for long-term preservation. Once reconstituted with a sterile aqueous diluent, the solution must be kept refrigerated at 2°C to 8°C and used within a limited research timeframe.
What solvents are recommended for reconstituting CJC-1295 DAC?
Reconstitution is typically performed using sterile bacteriostatic water (0.9% benzyl alcohol) for multi-use laboratory assays, or sterile 0.9% sodium chloride solution for immediate in vitro or in vivo animal research applications.
What are the shipping speeds and handling practices for domestic orders?
PX1 Research dispatches orders same-day from California or Arizona when placed before 3:00 PM EST, Monday through Friday. Peptides are shipped in protective, insulated packaging to ensure compound stability during transit.
Can institutions purchase CJC-1295 DAC in bulk or custom quantities?
Yes. PX1 Research accommodates university labs, CROs, and biotech institutions with volume-based wholesale accounts. Bulk orders can be supplied from single, uniform production lots to preserve batch consistency across large studies.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.