5-Bromothiophen-2(5H)-one CAS 17019-33-9
| CAS No. | 17019-33-9 |
| Molecular Formula | C4H3BrOS |
| Molecular Weight | 179.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 179.04 g/mol gives 5-Bromothiophen-2(5H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Bromothiophen-2(5H)-one (CAS 17019-33-9), a certified reference material (molecular formula C4H3BrOS, MW 179.04 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, 5-Bromothiophen-2(5H)-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 179.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C4H3BrOS |
| Molecular Weight | 179.04 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromothiophen Standards
- 5-Bromothiophen-2-ol (CAS 1313392-39-0)
- 4-Bromothiophen-3-ol (CAS 1414637-78-7)
- 5-Bromothiophen-3-ol (CAS 1895301-60-6)
- 5-Bromothiophen-2(3H)-one (CAS 43225-51-0)
- 2-Bromothiophen-3-amine (CAS 106944-13-2)
- 5-Bromothiophen-2-amine (CAS 1159882-51-5)
- 4-Bromothiophen-2-amine (CAS 1163729-45-0)
- 4-Bromothiophen-3-amine (CAS 161833-43-8)
Recommended Standards
- 5-Amino-2-bromothiazole (CAS 1375068-76-0)
- 2-(Bromomethyl)-1,3,4-thiadiazole (CAS 499770-90-0)
- 5-Bromothiazol-4-amine (CAS 1353101-50-4)
- 2-Amino-5-bromothiazole (CAS 3034-22-8)
- 1-(2-(Furan-2-yl)-2-oxoethyl)pyridin-1-ium iodide (CAS 53676-94-1)
- 5-Bromo-2-(difluoromethyl)-3-nitropyridin-4-amine (CAS 1805088-62-3)
- (4s)-2-(2-Hydroxy-3-methoxyphenyl)-1,3-thiazolidine-4-carboxylic acid (CAS 1265908-02-8)
- 1-Carboxy-N,N,N-trimethylmethanaminium palmitate (CAS 6640-00-2)
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- 4-Chloro-5-methyl-1H-pyrazole-3-carboxylic acid (CAS 29400-84-8)
- 4-Fluoro-5-(4-methylpiperazin-1-yl)benzene-1,2-diamine tetrahydrochloride (CAS 1220039-97-3)
- 1H-Pyrrolo[2,3-c]pyridine-3,4-dicarboxylic acid (CAS 1190320-34-3)
- Liraglutide(13-31)TFA Salt (CAS CATO-C4X-19929)
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