3,4-Dibromo-2,5-dimethoxytetrahydrofuran CAS 91468-55-2
| CAS No. | 91468-55-2 |
| Molecular Formula | C6H10Br2O3 |
| Molecular Weight | 289.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4-Dibromo-2,5-dimethoxytetrahydrofuran (CAS 91468-55-2), molecular formula C6H10Br2O3 and molecular weight 289.95 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3,4-Dibromo-2,5-dimethoxytetrahydrofuran (C6H10Br2O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, 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.
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.
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 | C6H10Br2O3 |
| Molecular Weight | 289.95 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,6-Dibromo-5-methyl-1H-indazole (CAS 1000342-39-1)
- 3,5-Dibromo-6-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1000343-79-2)
- 4,7-Dibromo-2,3-dihydro-1H-inden-1-one (CAS 103515-98-6)
- 3,8-Dibromo-6-methylimidazo[1,2-a]pyridine (CAS 1072944-58-1)
- 3,6-Dibromo-7-methylimidazo[1,2-a]pyridine (CAS 1072944-65-0)
- 3,5-Dibromo-4-methyl-(1H)indazole (CAS 1082040-13-8)
- 2,6-Dibromo-2,3-dihydro-1H-inden-1-one (CAS 1188141-94-7)
- 4,7-Dibromo-1-methyl-1H-benzo[d]imidazole (CAS 1235442-60-0)
Recommended Standards
- 2-Bromo-3-(bromomethyl)benzofuran (CAS 38281-50-4)
- 3,4-Dibromo-6-methyl-1H-indazole (CAS 885523-94-4)
- 2,6-Bis(bromomethyl)isonicotinonitrile (CAS 611233-77-3)
- 3,5-Dibromo-1-methyl-1H-indazole (CAS 52088-11-6)
- Thiothinone hydrochloride (CAS 54817-67-3)
- 3-(3-cyanophenoxymethyl)benzoic acid (CAS 342908-38-7)
- 4-Benzyl-1-(2-ethoxy-2-oxoethyl)pyridin-1-ium bromide (CAS 123471-53-4)
- (3-(Dimethylcarbamoyl)-4-fluorophenyl)boronic acid (CAS 874219-27-9)
- Levomoprolol Hydrochloride (CAS 113482-87-4)
- 2-(Hydroxymethyl)-5-(trifluoromethoxy)benzimidazole (CAS 919054-04-9)
- Ursodeoxycholic Acid Impurity 128 (CAS CATO-C4X-1422128)
- Baloxavir Impurity 62 (CAS 3047099-99-7)
- Bis(2,4-dimethylphenyl)methanone (CAS 3478-88-4)
- Semaglutide impurity 22(OtBu-Ste-γGlu(OtBu)-AEEA-AEEA-OH) (CAS 1118767-16-0)
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