2-Bromo-4-formylbenzoic acid CAS 90001-44-8
| CAS No. | 90001-44-8 |
| Molecular Formula | C8H5BrO3 |
| Molecular Weight | 229.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-4-formylbenzoic acid (CAS 90001-44-8) is a high-purity analytical reference standard with the molecular formula C8H5BrO3 and a molecular weight of 229.03 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 2-Bromo-4-formylbenzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 229.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H5BrO3 |
| Molecular Weight | 229.03 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
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Recommended Standards
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- 5-(4-(Methylthio)phenyl)pyridin-2-ol (CAS 1111103-03-7)
- 2-(5-Cyclopropyl-3-(difluoromethyl)-1H-pyrazol-1-yl)acetic acid (CAS 1002032-66-7)
- trans-2-(Dimethylamino)cycloheptanol (CAS 67580-08-9)
- (1-(Benzo[d]thiazol-2-yl)piperidin-3-yl)methanol (CAS 941030-87-1)
- (R)-4-(tert-Butyl)-2-(1,8-naphthyridin-2-yl)-4,5-dihydrooxazole (CAS 2757082-56-5)
- n-(1-(5-Methylfuran-2-yl)ethyl)cyclopropanamine (CAS 953747-11-0)
- 2-Chloro-4'-(trifluoromethyl)-[1,1'-biphenyl]-3-amine (CAS 1261747-48-1)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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