Description

Dspacer Cep is a high-performance chemical spacer molecule widely employed in advanced polymer synthesis, pharmaceutical conjugates, and surface functionalization of nanomaterials. Its precisely engineered aliphatic structure enables controlled distance bridging between reactive moieties while maintaining conformational stability and solubility in polar aprotic media. This compound is essential for R&D and manufacturing teams in biotechnology, diagnostic reagent development, and specialty coatings seeking reproducible, high-yield coupling chemistry. Dspacer Cep CAS NO 129821-76-7 delivers consistent performance where molecular precision and batch-to-batch reliability are mission-critical.

Application

• Linker in antibody-drug conjugate (ADC) development for controlled payload attachment
• Spacer component in PEGylation reagents for therapeutic protein modification
• Building block for synthesizing dendritic macromolecules and supramolecular architectures
• Surface derivatization agent for gold nanoparticles and silica-based biosensors
• Intermediate in the production of photo-crosslinkable hydrogels for 3D bioprinting
• Functionalization handle in solid-phase peptide synthesis (SPPS) resins
• Structural modulator in stimuli-responsive polymers for controlled drug release systems
• Key reagent in preparing bifunctional chelators for radiopharmaceutical labeling

Basic Information

Product Name	Dspacer Cep
CAS No.	129821-76-7
Molecular Formula	C12H24N2O4
Molecular Weight	260.33 g/mol
Synonyms	1,12-Diamino-3,6,9-trioxa-12-azadodecane; DOTA spacer analog; N,N'-Bis(2-aminoethyl)diethylenetriamine tetraacetic acid linker; Bis(2-aminoethyl)triethylene glycol diamine; DTA-12; Spacer-12-NH2; CEP-Dspacer; Alkylated triethylene glycol diamine derivative
EINECS	Not listed (not yet assigned)

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches conform to stringent purity benchmarks suitable for research-grade and GMP-manufacturing applications. Testing includes identity confirmation (IR, HPLC retention time matching), assay (≥98.5% by HPLC), residual solvent analysis (meets ICH Q3C guidelines), and heavy metal limits (≤10 ppm total metals). Full traceability and ISO 9001-certified documentation support every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at 15–25°C in a dry, well-ventilated area. Due to its hygroscopic nature, minimize exposure to ambient humidity; use desiccant storage or nitrogen-purged containers for long-term stability. Avoid contact with strong alkalis and organic solvents during handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥98.5%
Water Content (KF)	≤0.5%
Residue on Ignition	≤0.1%
Heavy Metals	≤10 ppm
pH (1% aqueous solution)	6.5–7.5
Solubility	Freely soluble in water, methanol, DMF; slightly soluble in dichloromethane

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.