(E)-3-(2-Bromophenyl)acrylaldehyde CAS 138555-58-5
| CAS No. | 138555-58-5 |
| Molecular Formula | C9H7BrO |
| Molecular Weight | 211.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(E)-3-(2-Bromophenyl)acrylaldehyde (CAS 138555-58-5), molecular formula C9H7BrO and molecular weight 211.06 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H7BrO, (E)-3-(2-Bromophenyl)acrylaldehyde contains a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 211.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H7BrO |
| Molecular Weight | 211.06 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
Related E Standards
- 3-(2-Bromophenyl)prop-2-yn-1-ol (CAS 116509-98-9)
- 3-(3-Bromophenyl)-2-propenal (CAS 15185-59-8)
- 3-(3-Bromophenyl)prop-2-yn-1-ol (CAS 170859-80-0)
- (E)-3-(3-Bromophenyl)acrylaldehyde (CAS 97985-66-5)
- 1-(2-Bromophenyl)-2-propyn-1-ol (CAS 222713-56-6)
- 1-(2-Bromophenyl)prop-2-en-1-one (CAS 71095-56-2)
- 1-(3-Bromophenyl)-2-propyn-1-ol (CAS 29805-16-1)
- 1-(3-Bromophenyl)prop-2-en-1-one (CAS 791588-72-2)
Recommended Standards
- 7-Bromo-1-methyl-1H-pyrrolo[2,3-c]pyridine (CAS 1379368-48-5)
- 4-Bromo-7-methyl-1-benzofuran (CAS 1388020-71-0)
- 7-Bromo-3-methylimidazo[1,5-α]pyridine (CAS 1379355-19-7)
- 2-Bromo-6-methyl-1H-benzo[d]imidazole (CAS 1388060-94-3)
- 4-Cyanophenyl 4-pentylcyclohexanecarboxylate (CAS 70443-56-0)
- (3E)-4-[(2,4-Dichlorophenyl)amino]-3-(3,4-dimethoxyphenyl)but-3-en-2-one (CAS 339017-34-4)
- 6-Chloro-2-(difluoromethyl)-3-methylpyridin-4-amine (CAS 1805922-27-3)
- 6-Methoxy-2-(propan-2-yl)-1H-1,3-benzodiazole (CAS 192696-36-9)
- Etodolac Ethyl Ester (CAS 200880-23-5)
- 2-(4-Chlorophenyl)-5-(2-propoxybenzylidene)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 609794-88-9)
- Trimetazidine EP Impurity F（Dihydrochloride） (CAS 113698-83-2)
- 2-Bromo-4-(3-hydroxyprop-1-en-1-yl)-6-methoxyphenol (CAS 83071-65-2)
- 4-(3-Bromo-4-chlorophenyl)butanoic acid (CAS 1532077-82-9)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
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