Description

Dibenzo(B,E)(1,4)Dioxin, 2,3,7,8-Tetra(Chloro-37Cl)- CAS NO 85508-50-5 is a stable isotope-labeled analog of the highly studied environmental contaminant 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD). This compound is critical for precise analytical quantification and research, providing an essential internal standard for mass spectrometry to ensure accuracy and reliability in trace-level detection. It is primarily required by analytical laboratories, environmental monitoring agencies, and research institutions focused on dioxin analysis, toxicology studies, and regulatory compliance testing.

Application

• Internal Standard for Mass Spectrometry: Serves as a critical reference compound in GC-MS and LC-MS/MS analysis for the accurate quantification of native 2,3,7,8-TCDD and related congeners in complex matrices.
• Environmental Analysis: Used in the testing of soil, water, sediment, and air samples to monitor dioxin contamination levels and assess environmental impact.
• Food and Feed Safety Testing: Essential for regulatory compliance testing to determine dioxin and PCB levels in food products, animal feed, and edible oils.
• Toxicological and Biomedical Research: Enables precise pharmacokinetic, metabolic, and biomarker studies investigating the mechanisms of dioxin toxicity and human exposure.
• Quality Control and Method Validation: Employed by testing laboratories and chemical manufacturers to validate analytical methods, ensure instrument performance, and guarantee the accuracy of results.
• Waste and Emission Monitoring: Applied in the analysis of industrial emissions, incinerator fly ash, and chemical waste to ensure compliance with international emission standards (e.g., Stockholm Convention).

Basic Information

Product Name	Dibenzo(B,E)(1,4)Dioxin, 2,3,7,8-Tetra(Chloro-37Cl)- CAS NO 85508-50-5
CAS No.	85508-50-5
Molecular Formula	C₁₂H₄³⁷Cl₄O₂
Molecular Weight	~329.96 (Exact mass varies with isotopic enrichment)
Synonyms	2,3,7,8-Tetrachlorodibenzo[b,e][1,4]dioxin-³⁷Cl₄; 2,3,7,8-TCDD-³⁷Cl₄; ³⁷Cl₄-2,3,7,8-TCDD; Isotopically Labeled 2,3,7,8-TCDD; [³⁷Cl₄]-2,3,7,8-Tetrachlorodibenzo-p-dioxin; Dibenzo-p-dioxin, 2,3,7,8-tetrachloro- (³⁷Cl₄); Internal Standard for Dioxin Analysis (³⁷Cl₄)
EINECS	Contact for details

Quality Control

Every batch of our isotope-labeled standards is produced and verified under strict quality control protocols to ensure the highest isotopic purity and chemical integrity. Our products are characterized using advanced techniques including High-Resolution Mass Spectrometry (HRMS) and Nuclear Magnetic Resonance (NMR) to confirm isotopic enrichment and structural identity. Certificates of Analysis (COA) are provided with each shipment, detailing the isotopic purity, chemical purity, concentration, and analytical method used. We support compliance with global standards such as ISO/IEC 17025 for testing laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry, well-ventilated area. For long-term stability, solutions are recommended to be stored at -20°C or below under inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white solid or solution
Identification (NMR)	Conforms to structure
Identification (HRMS)	Conforms to exact mass
Isotopic Purity (³⁷Cl₄)	≥ 99%
Chemical Purity (HPLC)	≥ 98%
Concentration (if in solution)	10 µg/mL ± 5% in nonane or toluene
Solvent (if in solution)	Nonane, Toluene, or as specified

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