2-Bromo-6-hydroxy-5-methoxy-3-nitrobenzaldehyde CAS 205652-99-9
| CAS No. | 205652-99-9 |
| Molecular Formula | C8H6BrNO5 |
| Molecular Weight | 276.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Bromo-6-hydroxy-5-methoxy-3-nitrobenzaldehyde (CAS 205652-99-9) is a high-purity analytical reference standard with the molecular formula C8H6BrNO5 and a molecular weight of 276.04 g/mol.
2-Bromo-6-hydroxy-5-methoxy-3-nitrobenzaldehyde (C8H6BrNO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C8H6BrNO5 |
| Molecular Weight | 276.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 3-Bromo-4-methoxy-5-nitrobenzoic acid (CAS 954815-08-8)
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- 2-(3,5-Difluoro-4-nitrophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2377610-72-3)
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- N-methyl-3-propoxycyclobutan-1-amine (CAS 1517843-23-0)
- 3,4-dihydro-2H-1-benzopyran-2-carbaldehyde (CAS 169747-89-1)
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