Sodium 3,4,5,6-tetrabromophthalate CAS 25357-79-3
| CAS No. | 25357-79-3 |
| Molecular Formula | C8Br4O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8Br4O4Na, Sodium 3,4,5,6-tetrabromophthalate contains a salt form, 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 502.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Sodium 3,4,5,6-tetrabromophthalate (CAS 25357-79-3) is a high-purity analytical reference standard with the molecular formula C8Br4O4Na and a molecular weight of 502.69 g/mol.
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 Sodium 3,4,5,6-tetrabromophthalate 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 | C8Br4O4 2*Na |
| Molecular Weight | 502.69 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Br-containing |
Recommended Standards
- 2-(Bromomethyl)-3,3,3-trifluoropropanamide (CAS 1868-52-6)
- 3-Methyl-1,2-thiazole-5-carbaldehyde (CAS 88511-32-4)
- Cholestyramine (CAS 11041-12-6)
- N,N-1,6-Hexanediylbis-1-aziridinecarboxamide (CAS 2271-93-4)
- 5-Methoxy-2-phenylbenzoic acid (CAS 92254-27-8)
- 1-(4,5-Difluoro-2-methoxyphenyl)ethan-1-one (CAS 1256477-94-7)
- 2-(5-Bromo-4-hydroxypyridin-2-yl)acetonitrile (CAS 1807118-27-9)
- 1-(Dodecyloxy)-4-methylbenzene (CAS 53034-97-2)
- N4,5-Dimethyldeoxycytidine (CAS 25406-44-4)
- Semaglutide (CAS 910463-68-2)
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