(3-Formyl-5-nitrothiophen-2-yl)boronic acid CAS 21157-02-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21157-02-8 |
| Molecular Formula | C5H4BNO5S |
| Molecular Weight | 200.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity (3-Formyl-5-nitrothiophen-2-yl)boronic acid (CAS 21157-02-8) pharmaceutical standards reference standard. Molecular formula: C5H4BNO5S. Molecular weight: 200.96 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C5H4BNO5S |
| Molecular Weight | 200.96 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Formyl Standards
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- 2-Formyl-3-hydroxybenzenesulfonamide (CAS 1243446-48-1)
- 5-Formyl-2-(4-fluorophenyl)pyridine (CAS 135958-93-9)
- 6-formyl-4H-thieno[3,2-b]pyrrole-5-carboxylic acid (CAS 15811-14-0)
- 2-(3-Formyl-5,5-dimethylcyclohex-2-en-1-ylidene)malononitrile (CAS 1621707-64-9)
- 5-Formyl-2-methylbenzenesulfonic acid (CAS 80318-84-9)
- 2-((3-FORMYL-1H-INDOL-4-YL)OXY)ACETONITRILE (CAS 118855-85-9)
- 3-Formyl-5-methoxy-1H-indole-2-carbonitrile (CAS 62542-48-7)
Recommended Standards
- 4-(Aminocarbonyl)-3,5-difluorophenylboronic acid (CAS 924279-82-3)
- 4-Bromo-4,4-difluorobut-2-enoic acid (CAS 234096-26-5)
- 2,5-dichlorothiophen-3-ylboronic acid (CAS 177735-28-3)
- (1-Ethyl-1H-pyrrol-2-yl)methanethiol (CAS 1420967-06-1)
- (S)-3-(4-Cyclopropyl-2,5-dioxoimidazolidin-4-yl)propanoic acid (CAS 1957283-54-3)
- 4-(2-Chloroethoxy)-3-methoxybenzonitrile (CAS 1094313-50-4)
- 6-Bromo-4-chloro-2,3-difluorobenzoic acid (CAS 2414146-36-2)
- 2-[5-(2-methylpropyl)-4-oxo-3h,4h-thieno[2,3-d]pyrimidin-2-yl]acetonitrile (CAS 926208-72-2)
- 1-Bromo-4-(ethylsulfonyl)butane (CAS 343269-12-5)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com