1,3,6,7,8-Pentachlorodibenzofuran CAS 70648-21-4
| CAS No. | 70648-21-4 |
| Molecular Formula | C12H3Cl5O |
| Molecular Weight | 340.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1,3,6,7,8-Pentachlorodibenzofuran (CAS 70648-21-4), a certified reference material (molecular formula C12H3Cl5O, MW 340.42 g/mol) for analytical method development and quality control.
Owing to a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 1,3,6,7,8-Pentachlorodibenzofuran is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 340.42 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H3Cl5O |
| Molecular Weight | 340.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
Related Pentachlorodibenzofuran Standards
- 1,2,3,4,7-Pentachlorodibenzofuran (CAS 83704-48-7)
- 1,2,3,6,7-Pentachlorodibenzofuran (CAS 57117-42-7)
- 1,2,3,7,9-Pentachlorodibenzofuran (CAS 83704-53-4)
- 1,2,3,8,9-Pentachlorodibenzofuran (CAS 83704-54-5)
- 1,2,4,6,8-Pentachlorodibenzofuran (CAS 69698-57-3)
- 1,2,4,7,8-Pentachlorodibenzofuran (CAS 58802-15-6)
- 1,3,4,6,7-Pentachlorodibenzofuran (CAS 83704-36-3)
- 1,3,4,7,8-Pentachlorodibenzofuran (CAS 58802-16-7)
Recommended Standards
- 1,3,4,7,9-Pentachlorodibenzofuran (CAS 70648-20-3)
- 1,3-Bis(2-methoxy-5-methylphenyl)tetrahydropyrimidin-2(1H)-one (CAS 84379-38-4)
- 1,4,6,7,8-Pentachlorodibenzofuran (CAS 83704-35-2)
- 1-[(4-Methylphenyl)methyl]-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (CAS 866010-17-5)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com