Ethyl 4-(3-bromothiophen-2-yl)-4-oxobutanoate CAS 951889-19-3
| CAS No. | 951889-19-3 |
| Molecular Formula | C10H11BrO3S |
| Molecular Weight | 291.16 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 Ethyl 4-(3-bromothiophen-2-yl)-4-oxobutanoate.
CATO supplies Ethyl 4-(3-bromothiophen-2-yl)-4-oxobutanoate (CAS 951889-19-3), a certified reference material (molecular formula C10H11BrO3S, MW 291.16 g/mol) for analytical method development and quality control.
Structurally, Ethyl 4-(3-bromothiophen-2-yl)-4-oxobutanoate (C10H11BrO3S) contains a sulfone group, 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 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 291.16 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C10H11BrO3S |
| Molecular Weight | 291.16 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 1-(5-Bromothiophen-2-yl)-5-methoxypentane-1,3-dione (CAS 1183540-72-8)
- Methyl 5-(5-bromothiophen-2-yl)-5-oxopentanoate (CAS 1267861-35-7)
- 5-(3-Bromothiophen-2-yl)-3-methyl-5-oxopentanoic acid (CAS 951894-04-5)
- 2-(5-Bromothiophen-2-yl)quinoxaline (CAS 175135-75-8)
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Recommended Standards
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- BTZ2F26-2Br (CAS 1916476-35-1)
- 2',4',6'-Trihydroxyacetophenone Monohydrate (CAS 480-66-0)
- Perfluorooctane sulfonamide (CAS 754-91-6)
- 6-(2,5-Difluorophenyl)pyridin-2-amine (CAS 1178652-18-0)
- 4-(Furan-2-carbonyl)-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one (CAS 89076-04-0)
- Tribromochloromethane (CAS 594-15-0)
- 3-(4-Bromo-5-chlorofuran-2-yl)propanoic acid (CAS 1707568-35-1)
- 2-(tert-Butoxy)-3-cyclopropoxy-6-methylpyridine (CAS 1243288-89-2)
- 5-Iodo-4-(trifluoromethyl)pyridin-2-amine (CAS 1321530-57-7)
- C-Peptide 1 (rat) (CAS 41475-27-8)
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