5-(5-Bromothiophen-2-yl)isoxazole CAS 138716-31-1
| CAS No. | 138716-31-1 |
| Molecular Formula | C7H4BrNOS |
| Molecular Weight | 230.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-(5-Bromothiophen-2-yl)isoxazole 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.
CATO supplies 5-(5-Bromothiophen-2-yl)isoxazole (CAS 138716-31-1), a certified reference material (molecular formula C7H4BrNOS, MW 230.08 g/mol) for analytical method development and quality control.
5-(5-Bromothiophen-2-yl)isoxazole (C7H4BrNOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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.) | 1996 |
| 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)
- 3-(5-Bromothiophen-2-yl)isoxazole (CAS 175205-66-0)
- 5-(5-Bromothiophen-2-yl)oxazole (CAS 321309-25-5)
- 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
- 3,4,4,4-Tetrafluoro-3-(trifluoromethoxy)butan-1-ol (CAS 1378864-58-4)
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- 3-bromo-6H,7H-thieno[2,3-c]pyridin-7-one (CAS 1360967-00-5)
- 6-Bromo-1,2-benzothiazol-3-ol (CAS 1427079-44-4)
- Benzo[c][1,2,5]oxadiazol-4-ylmethanol (CAS 175609-19-5)
- 4-(3-CHLOROPYRIDIN-2-YL)BENZOIC ACID (CAS 582325-32-4)
- 5-(methylamino)-2,3-dihydropyridazin-3-one hydrochloride (CAS 1354963-48-6)
- 5-Fluoro-2-iodo-4-methylaniline (CAS 1126423-32-2)
- 4-Methyl-3-(2-methylcyclopropyl)-1h-pyrazol-5-amine (CAS 1187767-06-1)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isobenzofuran-1,3-dione (CAS 1637547-42-2)
- 2-Ethylbutyl 4-(2-bromophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 300360-02-5)
- (3,5-Dimethyl-1H-pyrazol-1-yl)(3-((4-phenylpiperazin-1-yl)sulfonyl)thiophen-2-yl)methanone (CAS 1171238-68-8)
- 1-(3,4-Dihydro-2H-1,5-benzodioxepin-7-yl)-ethanone Oxime (CAS 146321-89-3)
- [D-Ser8]-Semaglutide A (CAS CATO-C4X-2226116)
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