7-bromo-benzo[1,3]dioxole-5-carbaldehyde CAS 19522-96-4
| CAS No. | 19522-96-4 |
| Molecular Formula | C8H11BrO3 |
| Molecular Weight | 235.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-bromo-benzo[1,3]dioxole-5-carbaldehyde is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-bromo-benzo[1,3]dioxole-5-carbaldehyde (CAS 19522-96-4), molecular formula C8H11BrO3 and molecular weight 235.08 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 7-bromo-benzo[1,3]dioxole-5-carbaldehyde is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 235.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H11BrO3 |
| Molecular Weight | 235.08 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
Related bromo Standards
- 1-Bromo-5-ethyl-3,5-dimethylimidazolidine-2,4-dione (CAS 101012-25-3)
- 2-Bromo-4-phenylpyrimidine (CAS 10198-98-8)
- 7-Bromo-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one (CAS 105544-36-3)
- 6-Bromo-2,3'-bipyridine (CAS 106047-28-3)
- 6-Bromo-2,4'-bipyridine (CAS 106047-29-4)
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- 5-Bromo-3,4'-bipyridine (CAS 106047-38-5)
- 4-Bromo-7-methyl-1H-indole-6-carbonitrile (CAS 1082040-83-2)
Recommended Standards
- 5-Bromo-4-methyl-1H-indole-2-carbonitrile (CAS 1857296-19-5)
- (4-Bromo-1-(2-methoxyethyl)-1H-pyrazol-3-yl)methanol (CAS 2426630-64-8)
- 6-Bromo-2-naphthaldehyde (CAS 170737-46-9)
- 1-(2,6-Dioxabicyclo[3.2.1]octan-1-yl)-2-bromoethanone (CAS 2573216-37-0)
- (+)-3,4,4a,5,6,10b-Hexahydro-9-methoxy-2H-naphtho[1,2-b][1,4]oxazin-3-one (4aR-trans)-4a,5,6,10b-Tetrahydro-9-methoxy-2H-naphth[1,2-b]-1,4-oxazin-3(4H)-one 153153-60-7 (CAS 153153-60-7)
- Ac-Trp-NHMe (CAS 6367-17-5)
- 1-Bromo-2-fluoro-3-isocyanatobenzene (CAS 1506860-05-4)
- Piperazine Impurity 13 (CAS CATO-C4X-126513)
- 20(R)Protopanaxdiol (CAS 7755-01-3)
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- 4-(Benzyloxy)-2-chloro-N-[(ethylcarbamoyl)amino]benzamide (CAS 478039-96-2)
- Methyl 2,6-difluoro-4-(trifluoromethoxy)benzoate (CAS 2267343-62-2)
- Tau Peptide (277-291) trifluoroacetate salt (CAS 330456-40-1)
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