(E)-3-(4-bromophenyl)but-2-enoic acid CAS 90772-57-9
| CAS No. | 90772-57-9 |
| Molecular Formula | C10H9BrO2 |
| Molecular Weight | 241.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (E)-3-(4-bromophenyl)but-2-enoic acid.
(E)-3-(4-bromophenyl)but-2-enoic acid (CAS 90772-57-9), molecular formula C10H9BrO2 and molecular weight 241.08 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (E)-3-(4-bromophenyl)but-2-enoic acid (C10H9BrO2) 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 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 241.08 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (E)-3-(4-bromophenyl)but-2-enoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H9BrO2 |
| Molecular Weight | 241.08 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
Related E Standards
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- 3-(3-Bromophenyl)oxetane-3-carbaldehyde (CAS 1363381-25-2)
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Recommended Standards
- (7-Bromo-2-methylimidazo[1,2-a]pyridin-8-yl)methanol (CAS 2443448-71-1)
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- (6-Bromo-1-methyl-1H-pyrrolo[3,2-b]pyridin-3-yl)methanol (CAS 2231673-28-0)
- (R)-1-(5-bromobenzofuran-2-yl)ethan-1-ol (CAS 600727-05-7)
- 2-Bromo-6-(hydroxymethyl)pyridine 1-oxide (CAS 897943-05-4)
- (3-(2,2,2-Trifluoroacetamido)phenyl)boronic acid (CAS 88978-20-5)
- (R)-1-(pyrimidin-2-yl)ethan-1-amine (CAS 1344931-27-6)
- Quinapril ethyl ester maleic acid salt (CAS 103733-36-4)
- Tert-butyl ((1S,2R)-2-(aminomethyl)cyclohexyl)carbamate (CAS 1821775-80-7)
- 3-Bromo-1-isopentyl-5-methyl-1H-1,2,4-triazole (CAS 1322605-04-8)
- D-Glucose Monohydrate (CAS 5996-10-1)
- 3-aminotetrahydrofuran-3-carboxylic acid (CAS 125218-55-5)
- Methyl 2-(1,3,7-trimethyl-2,4-dioxo-1,2,3,4-tetrahydro-8H-imidazo[2,1-f]purin-8-yl)acetate (CAS 878421-27-3)
- D-β-Asp9-Tirzepatide (CAS CATO-CPTD788932)
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