5,5'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene CAS 239075-02-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 239075-02-6 |
| Molecular Formula | C20H28B2O4S2 |
| Molecular Weight | 418.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,5'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene (CAS 239075-02-6) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C20H28B2O4S2. Molecular weight: 418.19 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C20H28B2O4S2 |
| Molecular Weight | 418.19 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 2 |
Related Bis Standards
- 2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9H-fluorene (CAS 467219-11-0)
- 4,4,5,5-Tetramethyl-2-(2-(3-(trifluoromethyl)benzyl)benzo[b]thiophen-7-yl)-1,3,2-dioxaborolane (CAS 1207970-76-0)
- 2,2,3,3-Tetramethyl-4,7,10-trioxa-3-siladodecan-12-yl 4-methylbenzenesulfonate (CAS 199484-66-7)
- Methyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoquinoline-1-carbonyl)benzoate (CAS 1374249-67-8)
- 3,6-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9H-carbazole (CAS 1958113-34-2)
- Ethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tosyl-1H-pyrrole-2-carboxylate (CAS 1803791-10-7)
- 1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethanone (CAS 1071454-96-0)
- 2,8-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)dibenzo[b,d]furan (CAS 1197989-83-5)
Recommended Standards
- 1-[4-(4-Bromophenyl)-1,3-thiazol-2-yl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 956754-06-6)
- Fluralaner Impurity 21 (CAS CATO-C4X-218021)
- (E)-2-(2-(Benzo[d][1,3]dioxol-5-yl)vinyl)-6-iodoquinazolin-4(3H)-one (CAS 922189-68-2)
- 2-(1-Amino-4-ethylcyclohexyl)acetic acid (CAS 1339869-71-4)
- Ethyl (3-([1,1'-biphenyl]-4-yl)-5-amino-1,2-dihydropyrido[3,4-b]pyrazin-7-yl)carbamate (CAS 82586-04-7)
- N-Methyl-2-nitrobenzylamine (CAS 56222-08-3)
- (4as,4br,6as,8s,10as,10bs,12as)-10a,12a-dimethyl-2-oxooctadecahydronaphtho[2,1-f]quinolin-8-yl 4-{4-[bis(2-chloroethyl)amino]phenyl}butanoate 694-32-6 KST-1A7606 (CAS 694-32-6)
- 2,5-Dimethyl-1-(2-methyl-5-nitrophenyl)-1H-pyrrole-3-carbaldehyde (CAS 714278-11-2)
- tert-Butyl (4-chloro-5-cyanopyridin-2-yl)carbamate (CAS 1708976-70-8)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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