5,5-Dibromo-2,2-dimethyl-1,3-dioxane-4,6-dione CAS 66131-14-4
| CAS No. | 66131-14-4 |
| Molecular Formula | C6H6Br2O4 |
| Molecular Weight | 301.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,5-Dibromo-2,2-dimethyl-1,3-dioxane-4,6-dione (CAS 66131-14-4) is a high-purity analytical reference standard with the molecular formula C6H6Br2O4 and a molecular weight of 301.92 g/mol.
Based on its molecular formula C6H6Br2O4, 5,5-Dibromo-2,2-dimethyl-1,3-dioxane-4,6-dione contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 301.92 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.
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.
As a certified reference material (CRM), 5,5-Dibromo-2,2-dimethyl-1,3-dioxane-4,6-dione 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 | C6H6Br2O4 |
| Molecular Weight | 301.92 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 1,2-Dibromo-4-(difluoromethoxy)benzene (CAS 1000574-96-8)
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- 1,3-Dibromo-2-(difluoromethoxy)benzene (CAS 1182728-50-2)
- 4,6-Dibromo-2,3-difluoroanisole (CAS 1291487-25-6)
- 3,6-Dibromo-4,5-difluorobenzene-1,2-diamine (CAS 1345627-73-7)
- 2,4-Dibromo-1-(difluoromethoxy)benzene (CAS 1417567-95-3)
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- 1,4-Dibromo-2,5-difluoro-3-methoxybenzene (CAS 1803830-10-5)
Recommended Standards
- Dimethyl 2,3-dibromofumarate (CAS 116631-94-8)
- Methyl 3-bromo-2,4-dichloro-6-fluorobenzoate (CAS 2624417-86-1)
- 1,3-Dibromo-5-(difluoromethoxy)benzene (CAS 433939-48-1)
- 2-Amino-4,6-dibromopyridine-3,5-dicarbonitrile (CAS 70178-62-0)
- tert-Butyl (5-acetyl-6-fluoropyridin-2-yl)carbamate (CAS 1445962-06-0)
- Dimethyl 9-oxo-9H-fluorene-2,6-dicarboxylate (CAS 68399-64-4)
- 5-Bromo-4-chloro-1H-indol-3-yl acetate (CAS 3252-36-6)
- (1-((Tetrahydro-2H-pyran-2-yl)oxy)cyclopropyl)methanol (CAS 87326-01-0)
- tert-Butyl 4-(2-methylphenyl)piperazine-1-carboxylate (CAS 1121596-60-8)
- Alectinib Impurity 86 (CAS CATO-C4X-283686)
- (S)-2-Hexanamido-3-(4-hydroxyphenyl)propanoic acid (CAS 86432-28-2)
- 1-(3-Fluoro-4-methylbenzyl)-6-(1-hydroxyethyl)-2,5-piperazinedione (CAS 1353496-81-7)
- Methyl N-[6-[(4-aminophenyl)thio]-1H-benzimidazol-2-yl]carbamate (CAS 56073-96-2)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
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