5-(5-Bromothiophen-2-yl)oxazole CAS 321309-25-5
| CAS No. | 321309-25-5 |
| Molecular Formula | C7H4BrNOS |
| Molecular Weight | 230.08 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 5-(5-Bromothiophen-2-yl)oxazole.
5-(5-Bromothiophen-2-yl)oxazole (CAS 321309-25-5), molecular formula C7H4BrNOS and molecular weight 230.08 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4BrNOS, 5-(5-Bromothiophen-2-yl)oxazole contains an amide group, sulfur-containing functionality, 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 230.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H4BrNOS |
| Molecular Weight | 230.08 g/mol |
| 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.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromothiophen Standards
- 5-(5-Bromothiophen-2-yl)-1,3-oxazole (CAS 1268029-67-9)
- 3-(3-Bromothiophen-2-yl)-3-oxopropanenitrile (CAS 1339722-54-1)
- 5-(5-Bromothiophen-2-yl)isoxazole (CAS 138716-31-1)
- 3-(5-Bromothiophen-2-yl)isoxazole (CAS 175205-66-0)
- 5-(5-Bromothiophen-2-yl)-1H-pyrazole (CAS 166196-67-4)
- 5-(3-Bromothiophen-2-yl)-1H-pyrazole (CAS 166196-68-5)
- 1-(5-Bromothiophen-3-yl)-1H-imidazole (CAS 201656-14-6)
- 2-(3-Bromothiophen-2-yl)-1,3,4-oxadiazole (CAS 1357064-43-7)
Recommended Standards
- 4-Bromobenzo[d]thiazol-2(3H)-one (CAS 73443-85-3)
- 5-(Bromoacetyl)thiophene-2-carbonitrile (CAS 496879-84-6)
- 4-Bromo-7-fluoro-2-methylindoline (CAS 2091252-65-0)
- 5-(bromomethyl)-2-cyclopropyl-3-fluoro-pyridine (CAS 2848722-33-6)
- 1-(5-Methylpyridin-3-yl)ethan-1-ol (CAS 1550093-28-1)
- (S)-2-Amino-4-(3,4-difluorophenyl)butanoic acid (CAS 1260596-12-0)
- Jiangyao Toxin G Solution (CAS 1312711-74-2)
- 4-(4-Isobutylphenyl)cyclohexanone (CAS 1890662-66-4)
- (4-Bromo-3-cyclopropoxyphenyl)methanamine (CAS 1243409-69-9)
- 4-(4-Acryloyloxybutyloxy)benzoic acid (CAS 69260-42-0)
- 2-Bromo-6-(trimethylsilyl)pyridine (CAS 59409-80-2)
- N-(2-((4-bromophenyl)thio)ethyl)-4-methoxybenzamide (CAS 339099-74-0)
- Flocoumafen (CAS 90035-08-8)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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