3-Oxo-2,3-dihydro-1H-indene-4-carbaldehyde CAS 24257-88-3
| CAS No. | 24257-88-3 |
| Molecular Formula | C7H9BrN2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Oxo-2,3-dihydro-1H-indene-4-carbaldehyde is closely related to an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Oxo-2,3-dihydro-1H-indene-4-carbaldehyde (CAS 24257-88-3), molecular formula C7H9BrN2OHCl and molecular weight 253.52 g/mol, is a CATO reference standard with documented purity and traceability.
3-Oxo-2,3-dihydro-1H-indene-4-carbaldehyde (C7H9BrN2OHCl) contains an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. Halogen substitution raises its density and boiling point; 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.
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 | C7H9BrN2O HCl |
| Molecular Weight | 253.52 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- Octahydro-1H-cyclopenta[b]pyridine (CAS 51501-54-3)
- 4-Phenyl-2-(trifluoromethyl)pyridine (CAS 1262683-00-0)
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- Fluconazole (CAS 86386-73-4)
- [1,1'-Biphenyl]-2-ylhydrazine (CAS 59964-94-2)
- Nabumetone EP Impurity E (CAS 343272-53-7)
- 3-(6,7-Dihydro-5h-cyclopenta[b]pyridin-7-yl)propanoic acid (CAS 1534027-23-0)
- Lenvatinib Impurity 5 (CAS 1788901-86-9)
- 4-(1H-Imidazol-1-yl)-5-iodopyrimidine (CAS 1428881-71-3)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
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