2-Bromo-5-ethoxy-4-(2-propynyloxy)benzaldehyde CAS 429621-52-3
| CAS No. | 429621-52-3 |
| Molecular Formula | C12H11BrO3 |
| Molecular Weight | 283.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-Bromo-5-ethoxy-4-(2-propynyloxy)benzaldehyde (C12H11BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 283.12 g/mol, it falls into the medium-molecular-weight range. 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).
2-Bromo-5-ethoxy-4-(2-propynyloxy)benzaldehyde (CAS 429621-52-3), molecular formula C12H11BrO3 and molecular weight 283.12 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C12H11BrO3 |
| Molecular Weight | 283.12 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 chloroform, dichloromethane, ethyl acetate, 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
Related Bromo Standards
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- 6'-Bromo-1',2'-dihydrospiro[oxane-4,3'-pyrrolo[3,2-b]pyridine]-2'-one (CAS 1190862-19-1)
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Recommended Standards
- 2-Amino-3-(7-bromo-1H-indol-3-yl)propanoic acid (CAS 852391-45-8)
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- 2-Amino-3-(4-bromo-1H-indol-3-yl)propanoic acid (CAS 25796-04-7)
- 3-((3-Bromophenyl)amino)piperidine-2,6-dione (CAS 2828444-42-2)
- 3-Amino-5-propylisoxazole-4-carbonitrile (CAS 41808-51-9)
- 3-Methoxy-5-(trifluoromethyl)picolinonitrile (CAS 400085-19-0)
- 3-amino-4-fluorobenzenesulfonic acid (CAS 349-64-4)
- 4-Methylbenzofuran-5-carbaldehyde (CAS 119795-37-8)
- 1-(4-Chloro-2-fluorophenyl)-2,5-dimethyl-1H-pyrrole (CAS 1456074-62-6)
- N-(2-Methoxyphenyl)-5-(2-(trifluoromethyl)phenyl)furan-2-carboxamide (CAS 622805-19-0)
- 6-Chloro-3-methoxy-2-methylpyridine (CAS 129692-13-3)
- 5-((3-Chlorobenzyl)thio)-3-(cyclohexylmethyl)-8,9-dimethoxyimidazo[1,2-c]quinazolin-2(3H)-one (CAS 1024017-13-7)
- Brivaracetam Impurity 84 (CAS CATO-C4X-200784)
- Semaglutide impurity 194 (CAS CATO-C4X-2226194)
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