4,4,5,5-Tetramethyl-2-(5'-phenyl-[1,1':3',1''-terphenyl]-3-yl)-1,3,2-dioxaborolane CAS 1257248-43-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1257248-43-3 |
| Molecular Formula | C30H29BO2 |
| Molecular Weight | 432.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4,5,5-Tetramethyl-2-(5'-phenyl-[1,1':3',1''-terphenyl]-3-yl)-1,3,2-dioxaborolane (CAS 1257248-43-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C30H29BO2. Molecular weight: 432.36 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C30H29BO2 |
| Molecular Weight | 432.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Tetramethyl Standards
- methyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(2-trimethylsilylethoxymethyl)pyrrolo[2,3-b]pyridine-3-carboxylate (CAS 1942057-11-5)
- 2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9H-fluoren-9-one (CAS 1116122-63-4)
- N-(3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)phenyl)-4-(trifluoromethyl)pyrimidin-2-amine (CAS 1312535-12-8)
- 1-{[2,5-Bis(tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-3-yl]carbonyl}pyrrolidine (CAS 2377607-12-8)
- 78140-47-3 2,2,6,6-Tetramethyl-4-[(triphenyl-lambda~5~-phosphanylidene)amino]piperidin-1-ol DTXSID80676262 (CAS 78140-47-3)
- 2-((4-Oxo-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydrophthalazin-1-yl)methyl)isoindoline-1,3-dione (CAS 2629316-44-3)
- 1,2-Bis[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]diazene (CAS 1432792-09-0)
- 1,2-bis(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethane (CAS 1422172-96-0)
Recommended Standards
- 6-(((Bis(2-cyanoethoxy)phosphoryl)oxy)methyl)-2,2-dimethyltetrahydro-4H-furo[3,2-d][1,3]dioxin-7-yl acetate (CAS 1041021-85-5)
- 1310383-29-9 tert-Butyl 4-{2-[3-(4,4,5,5-Tetramethyl[1,3,2]dioxaborolan-2-yl)phenoxy]ethyl}piperazine-1-carboxylate (CAS 1310383-29-9)
- Crizotinib Impurity 55 (CAS CATO-C4X-102555)
- 6-Bromospiro[2H-1,5-benzodioxepin-3(4H),1′-cyclopropane] (CAS 1334499-94-3)
- Benzyl N-(3-(2-methyl-1,3-dioxolan-2-yl)propanoyl)-N-((2'-(1-trityl-1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-L-valinate (CAS 1331888-33-5)
- 5'-Bromo-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1250980-10-9)
- Methyl Orotate (CAS 6153-44-2)
- Methyl (R)-4-Nitro-3-((oxiran-2-ylmethyl)amino)benzoate (CAS CATO-C3D-263045)
- 2-Amino-1-(p-tolyl)ethan-1-oloxalate (CAS 1172939-60-4)
- Des-Ala21-Tirzepatide (CAS CATO-CPTD788952)
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