5-Bromo-2-hydroxynaphthalene-1,4-dione CAS 1623748-83-3
| CAS No. | 1623748-83-3 |
| Molecular Formula | C10H5BrO3 |
| Molecular Weight | 253.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Bromo-2-hydroxynaphthalene-1,4-dione (CAS 1623748-83-3), molecular formula C10H5BrO3 and molecular weight 253.05 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromo-2-hydroxynaphthalene-1,4-dione (C10H5BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C10H5BrO3 |
| Molecular Weight | 253.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 6-Bromo-1,8-naphthyridine-3-carboxylic acid (CAS 1105191-97-6)
- 2-Bromo-5-nitroquinoline (CAS 116632-28-1)
- 3-Bromo-5-nitroquinoline (CAS 116632-33-8)
- 8-Bromo-6-nitroquinoline (CAS 120287-30-1)
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Recommended Standards
- 7-Bromo-1,6-naphthyridine-2-carboxylic acid (CAS 157848-47-5)
- 5-Bromo-1,7-naphthyridine-3-carboxylic acid (CAS 1646882-64-5)
- 4-Bromo-3-nitroquinoline (CAS 1566897-26-4)
- 5-Bromo-8-nitroquinoline (CAS 176967-80-9)
- 2,5-Dibromo-3-methoxyphenylboronic acid (CAS 919355-33-2)
- 3-Bromo-1-(4-methoxyphenyl)pyridin-2(1h)-one (CAS 1863035-95-3)
- 5-(4-(Methylsulfonyl)phenyl)indoline-2,3-dione (CAS 893737-62-7)
- N-(2-(Benzo[d][1,3]dioxol-5-yloxy)ethyl)-3-(4-methoxyphenyl)propanamide (CAS 1171547-26-4)
- Methyl 1,8a-dihydroimidazo[1,2-a]pyridine-2-carboxylate (CAS 1823187-98-9)
- 1-(5-Bromopyrimidin-2-yl)cyclohexan-1-amine (CAS 1341745-05-8)
- 1-[(oxolan-3-yl)methyl]piperidin-4-amine (CAS 108282-30-0)
- 4-Chloro-2-(piperidin-4-yloxy)pyrimidine hydrochloride (CAS 1159823-41-2)
- 3-(Thiophen-2-ylformamido)propanoic acid (CAS 36855-32-0)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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