(2E)-4-(3-Bromophenyl)-4-oxobut-2-enoic acid CAS 337461-33-3
| CAS No. | 337461-33-3 |
| Molecular Formula | C10H7BrO3 |
| Molecular Weight | 255.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 255.06 g/mol gives (2E)-4-(3-Bromophenyl)-4-oxobut-2-enoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(2E)-4-(3-Bromophenyl)-4-oxobut-2-enoic acid (CAS 337461-33-3) is a high-purity analytical reference standard with the molecular formula C10H7BrO3 and a molecular weight of 255.06 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, (2E)-4-(3-Bromophenyl)-4-oxobut-2-enoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 255.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (2E)-4-(3-Bromophenyl)-4-oxobut-2-enoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H7BrO3 |
| Molecular Weight | 255.06 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
Related E Standards
- 4-Bromophenyl sulfurofluoridate (CAS 133042-63-4)
- (E)-4-(4-Bromophenyl)-4-oxobut-2-enoic acid (CAS 20972-38-7)
- 2-Bromophenyl sulfofluoridate (CAS 2130839-88-0)
- 3-(4-Bromophenyl)dihydrofuran-2,5-dione (CAS 86967-06-8)
- 1-(3-Bromophenyl)imidazolidine-2,4-dione (CAS 1007579-01-2)
- [5-(4-bromophenyl)-1,3,4-oxadiazol-2-yl]methanol (CAS 1153761-13-7)
- 5-(2-Bromophenyl)imidazolidine-2,4-dione (CAS 1214020-90-2)
- (3-(4-Bromophenyl)-1,2,4-oxadiazol-5-yl)methanol (CAS 1342560-61-5)
Recommended Standards
- 1-Iodoisoquinoline (CAS 19658-77-6)
- 4-Bromo-1-(difluoromethyl)-5-(ethoxymethyl)-1H-pyrazole (CAS 1856097-02-3)
- 1-(4-Bromo-7-hydroxybenzofuran-2-yl)ethanone (CAS 803686-18-2)
- 4-Bromo-1-(difluoromethyl)-3-(ethoxymethyl)-1H-pyrazole (CAS 1856078-50-6)
- 3-Amino-N-isopropyl-4-methoxybenzamide (CAS 156564-75-9)
- Methyl (((9H-fluoren-9-yl)methoxy)carbonyl)serinate (CAS 851678-66-5)
- Fmoc-D-Phg-OH (CAS 111524-95-9)
- 2-((2,5-Dichlorophenyl)thio)acetaldehyde (CAS 1249739-74-9)
- 2-(Hydrazinylmethyl)-n,n-dimethylaniline dihydrochloride (CAS 849021-12-1)
- 2-Methylbutyl isobutyrate (CAS 2445-69-4)
- Benzo[d][1,3]dioxol-5-yl(4-(hydroxymethyl)piperidin-1-yl)methanone (CAS 1082811-94-6)
- 3-Methylisoxazole (CAS 30842-90-1)
- (2,6-dimethylcyclohexyl)hydrazine (CAS 1053070-76-0)
- Des-Tyr10-Tirzepatide (CAS CATO-CPTD788680)
Why CATO?
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