Cjc-1295 Dac Test Report
Navigating analytical data is critical for validating reagent integrity in preclinical research. This analytical overview breaks down the CJC-1295 DAC test report, detailing how high-performance liquid chromatography, mass spectrometry, and endotoxin assays confirm compound identity and purity for laboratory experimentation.
Quick answer
Navigating analytical data is critical for validating reagent integrity in preclinical research. This analytical overview breaks down the CJC-1295 DAC test report, detailing how high-performance liquid chromatography, mass spectrometry, and endotoxin assays confirm compound identity and purity for laboratory experimentation.
Key takeaways
- A [CJC-1295](/research-peptides/cjc-1295-no-dac) DAC test report is an official [Certificate of Analysis](/research-peptides/what-is-a-coa-for-peptides) (COA) documenting the chemical identity, purity, and safety profile of the synthetic peptide.
- [CJC-1295](/research-peptides/cjc-1295-no-dac) with DAC (Drug Affinity Complex) is a modified 29-amino acid tetrasubstituted peptide analog of growth hormone-releasing hormone (GHRH).
- An authentic, independent test report provides transparent, quantitative data regarding the physiological and chemical characteristics of the sample batch.
- Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) is the gold standard method for determining the chromatographic purity of synthetic peptides.
Direct Answer: What Is a CJC-1295 DAC Test Report?
A CJC-1295 DAC test report is an official Certificate of Analysis (COA) documenting the chemical identity, purity, and safety profile of the synthetic peptide. Verified through Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) and Electrospray Ionization Mass Spectrometry (ESI-MS), it confirms peptide purity exceeding 99%, correct molecular weight, and low bacterial endotoxin levels.
In modern laboratory research, relying on unverified reagents introduces significant variables that compromise baseline data. A complete test report serves as full documentation that a batch of lyophilized peptide meets strict chemical standards before entering cellular or animal research protocols. Researchers evaluating peptides across our catalog of research peptides rely on these reports to establish lot-to-lot consistency and eliminate cross-contamination risks.
Chemical Profile and Structural Mechanism of CJC-1295 DAC
CJC-1295 with DAC (Drug Affinity Complex) is a modified 29-amino acid tetrasubstituted peptide analog of growth hormone-releasing hormone (GHRH). The underlying sequence contains specific amino acid substitutions at positions 2, 8, 15, and 27 (D-Ala2, Gln8, Ala15, and Leu27) designed to enhance enzymatic resistance against dipeptidyl peptidase-IV (DPP-IV) degradation. The addition of the maleimidopropionic acid linker—the Drug Affinity Complex—allows the peptide to form a stable, covalent bond with circulating serum albumin post-administration in preclinical animal models.
By binding bioconjugatively to endogenous albumin, CJC-1295 DAC resists rapid renal clearance and proteolysis, extending its biological half-life from minutes to several days. When evaluating the compound via our dedicated CJC-1295 DAC product page, researchers study a long-acting GHRH analog that continuously stimulates anterior pituitary somatotrophs, driving endogenously regulated growth hormone (GH) secretion and downstream insulin-like growth factor 1 (IGF-1) expression.
Key Analytical Markers in an Authentic Certificate of Analysis
An authentic, independent test report provides transparent, quantitative data regarding the physiological and chemical characteristics of the sample batch. When auditing a supplier report, laboratory investigators must confirm several key metrics to ensure analytical rigor.
First, the document must state the precise chemical name, CAS number, empirical formula, and theoretical molecular weight (3,647.28 g/mol for CJC-1295 DAC). Second, it must present raw, unedited analytical chromatograms alongside tabulated metrics including calculated purity percentage, observed molecular mass, physical appearance (a white, uniform lyophilized cake), net peptide content, and quantitative endotoxin levels expressed in Endotoxin Units per milligram (EU/mg).
Evaluating High-Performance Liquid Chromatography (RP-HPLC) Data
Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) is the gold standard method for determining the chromatographic purity of synthetic peptides. In an RP-HPLC assay, the CJC-1295 DAC sample is passed through a non-polar stationary phase column (typically C18) using a polar mobile phase gradient (water and acetonitrile containing 0.1% trifluoroacetic acid).
Purity is determined by integrating the area under the curve (AUC) for all detected UV absorbance peaks, typically measured at 214 nm or 220 nm. A compliant test report displays a single, sharp primary peak corresponding to CJC-1295 DAC, with minor secondary peaks (representing synthesis truncations, deletion sequences, or oxidation products) accounting for less than 1% of the total integrated area. Maintaining purity above 99.0% prevents unwanted biological interference during delicate receptor-binding assays documented in our research library hub.
Electrospray Ionization Mass Spectrometry (ESI-MS) Validation
While HPLC confirms compound homogeneity, Electrospray Ionization Mass Spectrometry (ESI-MS) verifies chemical identity by determining the exact molecular mass of the molecule. Because CJC-1295 DAC is a large synthetic polypeptide, mass spectrometers generate multi-charged ion species ([M+3H]3+, [M+4H]4+, [M+5H]5+) during the ionization phase.
The resulting mass spectrum is deconvoluted to calculate the observed neutral molecular weight. The test report must confirm that the deconvoluted mass matches the theoretical mass of 3647.28 Da within a strict tolerance window (typically ± 1 Da). Mass spectral verification guarantees that the batch contains the complete 30-amino acid sequence along with the functional DAC linker, rather than an incomplete fragment or incorrect sequence variant.
Endotoxin Limits and Microbial Contamination Assays
Bacterial endotoxins—lipopolysaccharides (LPS) derived from the outer membrane of Gram-negative bacteria—are potent pyrogens that can invalidate preclinical research. In cell culture models, minute endotoxin contamination induces non-specific inflammatory pathways, upregulating cytokines such as TNF-alpha and IL-6. In animal models, high endotoxin levels trigger fever, systemic immune responses, or septic shock.
Standard laboratory quality control requires quantitative endotoxin testing, typically performed using a chromogenic Limulus Amebocyte Lysate (LAL) assay or recombinant Factor C assay. A verified test report must document endotoxin levels well below established safety thresholds, typically strictly under <0.05 EU/mg. This guarantees that observed physiological changes in tissue repair models are attributable solely to GHRH receptor activation and not bacterial contamination.
Preclinical Literature: GH and IGF-1 Dynamics in Research
Preclinical literature demonstrates that CJC-1295 DAC functions as a potent secretagogue capable of inducing prolonged, dose-dependent elevations in plasma growth hormone and circulating IGF-1. In rodent models and non-human primate studies, a single administration of CJC-1295 DAC sustained elevated mean GH levels without ablating the natural pulsatile release pattern characteristic of endogenous somatotroph secretion.
Because IGF-1 plays a central role in protein translation, cellular proliferation, collagen synthesis, and systemic nitrogen retention, researchers utilize CJC-1295 DAC to investigate tissue repair mechanisms, musculoskeletal recovery, and metabolic remodeling. In vitro assays further suggest that sustained GHRH signaling promotes osteoblast differentiation and muscle satellite cell activation, making it a critical tool for regenerative biology.
Comparative Analysis: CJC-1295 DAC vs. Related GHRH Analogs
To select the appropriate tool for specific experimental designs, researchers frequently compare CJC-1295 DAC against short-acting GHRH analogs and complementary secretagogues. The presence of the maleimidopropionic acid linker fundamentally alters the clearance kinetics compared to un-complexed compounds.
For example, CJC-1295 No DAC (also known as Mod GRF 1-29) shares the identical tetrasubstituted amino acid backbone but lacks the affinity complex, resulting in a half-life measured in minutes rather than days. Similarly, Sermorelin represents the truncated 1-29 sequence of native GHRH without enzymatic stabilization, necessitating frequent dosing in rodent paradigms. When investigating maximal pituitary GH output, research designs often combine GHRH analogs with ghrelin receptor agonists like Ipamorelin or Tesamorelin to evaluate synergistic GH release dynamics.
Reconstitution Protocols and Storage Stability for Laboratory Use
Proper handling and storage protocols are vital to maintaining the structural integrity verified in the test report. Lyophilized CJC-1295 DAC should be stored in a desiccated environment at -20°C for short-term preservation or -80°C for extended storage to prevent moisture uptake and peptide degradation.
Reconstitution should be performed under a laminar flow hood using laboratory-grade solvents. For routine in vitro and in vivo research protocols, reconstitute using sterile bacteriostatic water (0.9% benzyl alcohol) or laboratory-grade 0.9% sodium chloride solution. Gentle swirling is recommended to dissolve the cake; aggressive vortexing or mechanical shaking must be avoided, as high shear forces can induce peptide aggregation and secondary structure denaturation. Reconstituted solutions should be stored at 2°C to 8°C and evaluated within experimental stability windows.
PX1 Research Quality Assurance and Institutional Procurement
PX1 Research maintains rigorous quality assurance standards for all research peptides, ensuring every lot meets exact chemical parameters before release. Our compounds are USA-manufactured in state-of-the-art GMP-compliant facilities and undergo mandatory independent testing at accredited ISO 17025 laboratories.
Every batch of CJC-1295 DAC features a publicly available, lot-specific test report including raw RP-HPLC chromatograms, ESI-MS spectrographs, and quantitative LAL endotoxin assays. All orders ship directly from our primary distribution hubs in California and Arizona with same-day dispatch for orders placed Monday through Friday. Institutional buyers and academic laboratories requiring bulk quantities for longitudinal studies can request tailored specifications through our wholesale lab account portal.
Frequently Asked Questions
What primary analytical tests should be included in a CJC-1295 DAC test report?
A comprehensive test report must include RP-HPLC for chromatographic purity quantification, ESI-MS for exact molecular weight verification, and an LAL or recombinant Factor C assay for bacterial endotoxin quantification.
What is the acceptable purity threshold for CJC-1295 DAC in research settings?
For reliable, reproducible preclinical research, CJC-1295 DAC should maintain a minimum purity threshold of 98.0%, with premium laboratory reagents reaching 99.0% or higher as verified by HPLC peak integration.
How does the DAC linker impact the expected molecular weight in mass spec assays?
The addition of the Drug Affinity Complex (maleimidopropionic acid) increases the theoretical molecular weight of the peptide to 3,647.28 g/mol. Mass spectrometry must confirm this exact target mass rather than the lower molecular weight of unmodified GHRH analogs.
Why is endotoxin testing critical for CJC-1295 DAC in animal models?
Endotoxins cause severe systemic immune responses, fever, and non-specific cytokine release. Verifying an endotoxin limit under <0.05 EU/mg ensures experimental observations are due to GHRH activity and not immune artifacts.
How does CJC-1295 DAC differ structurally from CJC-1295 No DAC on a COA?
A COA for CJC-1295 DAC will list the full 30-amino acid/linker mass (3647.28 Da), whereas CJC-1295 No DAC (Mod GRF 1-29) lacks the maleimide linker and displays a molecular weight of 3357.88 Da.
How should lyophilized CJC-1295 DAC be stored upon arrival at the laboratory?
Upon arrival, lyophilized peptide vials should be stored at -20°C or -80°C in a dry, dark environment to ensure long-term chemical stability and prevent thermal degradation.
Which solvent is recommended for reconstituting CJC-1295 DAC for in vitro assays?
Laboratory reconstitution is typically performed using sterile bacteriostatic water or sterile 0.9% saline solution, depending on the specific buffer requirements of the planned assay.
How can researchers verify that a PX1 Research test report is authentic?
Every PX1 Research product features a lot-specific number that corresponds to third-party ISO 17025 laboratory test reports accessible via our online database or upon request from customer support.
Related pages
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.