2-(5-Bromothiophen-2-yl)-2-oxoacetaldehyde CAS 21175-51-9
| CAS No. | 21175-51-9 |
| Molecular Formula | C6H3BrO2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-(5-Bromothiophen-2-yl)-2-oxoacetaldehyde 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.
2-(5-Bromothiophen-2-yl)-2-oxoacetaldehyde (CAS 21175-51-9), molecular formula C6H3BrO2SH2O and molecular weight 237.07 g/mol, is a CATO reference standard with documented purity and traceability.
2-(5-Bromothiophen-2-yl)-2-oxoacetaldehyde (C6H3BrO2SH2O) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C6H3BrO2S H2O |
| Molecular Weight | 237.07 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, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromothiophen Standards
- 4,7-Bis(5-bromothiophen-2-yl)-5,6-dinitrobenzo[c][1,2,5]thiadiazole (CAS 1000000-27-0)
- 3-(3-Bromothiophen-2-yl)propan-1-ol (CAS 1000508-67-7)
- 3-(5-Bromothiophen-2-yl)propan-1-amine (CAS 1000510-45-1)
- 3-(5-Bromothiophen-2-yl)propan-1-ol (CAS 1000518-75-1)
- 3-(4-bromothiophen-2-yl)propan-1-ol (CAS 1000529-80-5)
- 2-(3-Bromothiophen-2-yl)ethan-1-amine (CAS 1000532-83-1)
- 3,6-Bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (CAS 1000623-95-9)
- N-((5-Bromothiophen-2-yl)methyl)-1-(3,4-difluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 1001413-88-2)
Recommended Standards
- 6-Bromo-5-iodo-1H-indole-3-carboxylic acid (CAS 475641-09-9)
- 3-Chloro-N-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-2-oxoethyl)benzamide (CAS 312601-47-1)
- 5-Bromo-2,2-dimethyl-2,3-dihydro-1H-indene (CAS 88632-82-0)
- Ethyl 2-(isobutylamino)-2-methylpropanoate (CAS 1182908-25-3)
- (S)-3-(2,6-Diethylphenyl)-1-(1-hydroxy-3-methylbutan-2-yl)-4,5-dihydro-1H-imidazol-3-ium hexafluorophosphate(V) (CAS 2248771-38-0)
- 2-Amino-4-oxo-4,5-dihydrothiophene-3-carbonitrile (CAS 100557-26-4)
- cyclobutylmethylhydrazine dihydrochloride (CAS 1246748-00-4)
- 8-Azidoadenosine 3,5-cyclic monophosphosphate free acid (CAS 31966-52-6)
- 2-(2,4-Diethoxyphenyl)quinoline-4-carbohydrazide (CAS 906789-68-2)
- Tirzepatide Impurity 17 (CAS CATO-C4X-324017)
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