2,5-Dibromo-1,4-benzoquinone CAS 1633-14-3
| CAS No. | 1633-14-3 |
| Molecular Formula | C6H2Br2O2 |
| Molecular Weight | 265.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,5-Dibromo-1,4-benzoquinone (CAS 1633-14-3), molecular formula C6H2Br2O2 and molecular weight 265.89 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2,5-Dibromo-1,4-benzoquinone (C6H2Br2O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C6H2Br2O2 |
| Molecular Weight | 265.89 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)acetonitrile (CAS 477869-83-3)
- 2,6-Dibromo-3-methylphenol (CAS 100477-79-0)
- 2,5-Dibromo-3,6-dimethylpyrazine, 96% (CAS 121594-49-8)
- 5,6-Dibromo-2-methylpyridin-3-amine (CAS 1227628-71-8)
- 4,6-Dibromo-2-methylpyridin-3-amine (CAS 126325-49-3)
- 2,6-Dibromo-5-methylpyridin-3-amine (CAS 126325-51-7)
- 3,5-Dibromo-2-methylpyridin-4-amine (CAS 126325-54-0)
- 4,5-Dibromo-2-cyclopropyl-1H-imidazole (CAS 1269233-20-6)
Recommended Standards
- 4,6-Dibromopyrimidine-5-carbaldehyde (CAS 30129-50-1)
- 2,6-Dibromoquinone (CAS 19643-45-9)
- 4,5-Dibromocyclohexa-3,5-diene-1,2-dione (CAS 55759-50-7)
- (2-Bromo-4-(1H-pyrrol-1-yl)phenyl)boronic acid (CAS 2225169-01-5)
- 3-(4-Propoxyphenoxy)piperidine hydrochloride (CAS 1220033-91-9)
- 4-Amino-N-(4-iodophenyl)butanamide (CAS 1039879-31-6)
- 6-Bromo-3-chloro-2-fluoro-4-methoxyaniline (CAS 2795109-95-2)
- 61463-04-5 1-Propanone, 1-(2,4-dihydroxy-3,5-bis((2-hydroxyphenyl)methyl)-6-metoxyphenyl)-3-phenyl- 1-(2,4-Dihydroxy-3,5-bis((2-hydroxyphenyl)methyl)-6-metoxyphenyl)-3-phenyl-1-propanone (CAS 61463-04-5)
- 3-Chloro-4-(methylsulfanyl)aniline (CAS 5211-01-8)
- 3-(2-Methylpiperidin-1-yl)propan-1-ol (CAS 94-88-2)
- 9-Thia-2-azaspiro[5.5]undecane (CAS 86697-02-1)
- 2,3-Dichloro-6-fluoropyridine (CAS 51991-32-3)
- 5-(tert-Butyl)-2-(methylthio)phenol (CAS 66624-05-3)
- Palmitoyl Tripeptide-8 TFA salt (CAS 936544-53-5)
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