1,2,3,7,8-Pentabromodibenzo-p-dioxin CAS 109333-34-8
| CAS No. | 109333-34-8 |
| Molecular Formula | C12H3Br5O2 |
| Molecular Weight | 578.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2,3,7,8-Pentabromodibenzo-p-dioxin (CAS 109333-34-8), molecular formula C12H3Br5O2 and molecular weight 578.67 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H3Br5O2, 1,2,3,7,8-Pentabromodibenzo-p-dioxin contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 578.67 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.
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 manufactures 1,2,3,7,8-Pentabromodibenzo-p-dioxin under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H3Br5O2 |
| Molecular Weight | 578.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1988 |
| Halogen Content | Br-containing |
Related Pentabromodibenzo Standards
- 1,2,4,7,8-Pentabromodibenzo-p-dioxin (CAS 109333-35-9)
- 1,2,3,4,6-Pentabromodibenzo[b,d]furan (CAS 617707-93-4)
- 1,2,3,4,9-Pentabromodibenzo[b,d]furan (CAS 617707-96-7)
- 1,2,3,6,9-Pentabromodibenzo[b,d]furan (CAS 617707-99-0)
- 1,2,3,8,9-Pentabromodibenzo[b,d]furan (CAS 617708-01-7)
- 1,2,4,6,8-Pentabromodibenzo[b,d]furan (CAS 617708-03-9)
- 1,2,4,7,8-Pentabromodibenzo[b,d]furan (CAS 617708-05-1)
- 1,2,4,7,9-Pentabromodibenzo[b,d]furan (CAS 617708-06-2)
Recommended Standards
- β-Casomorphin (1-5) amide (bovine) (CAS 83936-21-4)
- Z-Leu-Arg-AMC (CAS 156192-32-4)
- Spacer phosphoramidite C3 (CAS 110894-23-0)
- Tepotinib impurity 25 (CAS CATO-C4X-337425)
- 2-Bromo-4-iododibenzofuran (CAS 1401068-25-4)
- 2-(tert-Butyl)-1-hexyl-4-phenyl-5,6-dihydrobenzo[h]quinolin-1-ium tetrafluoroborate (CAS 92540-90-4)
- 5-Bromo-4-methylbenzo[d]thiazol-2-amine (CAS 103873-80-9)
- 5-Amino-2-((6-oxo-1,6-dihydropyridin-2-yl)amino)pyrimidin-4(1H)-one (CAS 77961-61-6)
- 4542-77-2 2,6-Bis(bromomethyl)naphthalene DTXSID70394761 (CAS 4542-77-2)
- n-(Sec-butyl)benzo[d][1,3]dioxol-5-amine (CAS 1020989-36-9)
- 3-[(1,1-dioxido-1,2-benzisothiazol-3-yl)amino]propanoic acid (CAS 743440-15-5)
- (2-Bromophenoxy)acetyl chloride (CAS 39784-10-6)
- N-((1-Nicotinoylpiperidin-4-yl)methyl)furan-2-carboxamide (CAS 1396747-78-6)
- Semaglutide impurity 50 (CAS 2773558-66-8)
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