1,2,4,8,9-Pentachlorodibenzo[b,d]furan CAS 70648-23-6
| CAS No. | 70648-23-6 |
| Molecular Formula | C12H3Cl5O |
| Molecular Weight | 340.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies 1,2,4,8,9-Pentachlorodibenzo[b,d]furan (CAS 70648-23-6), a certified reference material (molecular formula C12H3Cl5O, MW 340.42 g/mol) for analytical method development and quality control.
The molecular framework of 1,2,4,8,9-Pentachlorodibenzo[b,d]furan (C12H3Cl5O) is characterized by a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 Pentachlorodibenzo Standards
- 1,2,3,7,8-pentachlorodibenzo[b,d]furan (CAS 57117-41-6)
- 1,2,4,6,7-Pentachlorodibenzo[b,d]furan (CAS 83704-50-1)
- 1,2,4,7,9-Pentachlorodibenzo[b,d]furan (CAS 71998-74-8)
- 2,3,4,6,7-Pentachlorodibenzo[b,d]furan (CAS 57117-43-8)
- 1,2,3,4,7-Pentachlorodibenzo-p-dioxin (CAS 39227-61-7)
- 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (CAS 40321-76-4)
- 1,2,3,8,9-Pentachlorodibenzo-p-dioxin (CAS 71925-18-3)
- 1,2,4,7,8-Pentachlorodibenzo-p-dioxin (CAS 58802-08-7)
Recommended Standards
- 1,3,4,6,7-Pentachlorodibenzofuran (CAS 83704-36-3)
- 1,2,4,7,8-Pentachlorodibenzofuran (CAS 58802-15-6)
- 1,3,4,7,8-Pentachlorodibenzofuran (CAS 58802-16-7)
- 1,2,4,6,8-Pentachlorodibenzofuran (CAS 69698-57-3)
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