1,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin CAS 19408-74-3
| CAS No. | 19408-74-3 |
| Molecular Formula | C12H2Cl6O2 |
| Molecular Weight | 390.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin (CAS 19408-74-3) is a high-purity analytical reference standard with the molecular formula C12H2Cl6O2 and a molecular weight of 390.87 g/mol.
Based on its molecular formula C12H2Cl6O2, 1,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 390.87 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 1,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H2Cl6O2 |
| Molecular Weight | 390.87 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >90% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
Related Hexachlorodibenzo Standards
- 1,2,3,4,6,7-Hexachlorodibenzo-p-dioxin (CAS 58200-66-1)
- 1,2,3,4,6,8-Hexachlorodibenzo-p-dioxin (CAS 58200-67-2)
- 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (CAS 39227-28-6)
- 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin (CAS 57653-85-7)
- 1,2,4,6,7,9-Hexachlorodibenzo-p-dioxin (CAS 39227-62-8)
- 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin 13C12 (CAS 109719-80-4)
- 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin 13C12 (CAS 109719-81-5)
- 1,2,3,4,6,8-Hexachlorodibenzo[b,d]furan (CAS 69698-60-8)
Recommended Standards
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- ((3S,4R)-3,4-Dimethylpyrrolidine-3,4-diyl)dimethanol (CAS 848616-46-6)
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- Graphene (CAS 1034343-98-0)
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- Ethyl 2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2,2-difluoroacetate (CAS 1431842-79-3)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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