4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1'-biphenyl]-4-ol CAS 760989-91-1
| CAS No. | 760989-91-1 |
| Molecular Formula | C18H21BO3 |
| Molecular Weight | 296.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1'-biphenyl]-4-ol (CAS 760989-91-1), molecular formula C18H21BO3 and molecular weight 296.17 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1'-biphenyl]-4-ol (C18H21BO3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.5, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 296.17 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H21BO3 |
| Molecular Weight | 296.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
Related Tetramethyl Standards
- 4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1'-biphenyl]-2-ol (CAS 1219741-54-4)
- 1-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl)ethanone (CAS 1614255-25-2)
- 3-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pentanedinitrile (CAS 2304635-62-7)
- 4,4,5,5-Tetramethyl-2-(3-phenoxyphenyl)-1,3,2-dioxaborolane (CAS 864772-18-9)
- 4,4,5,5-Tetramethyl-2-(2-methyl-4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 1011459-26-9)
- 4,4,5,5-Tetramethyl-2-(4-((methylsulfonyl)methyl)phenyl)-1,3,2-dioxaborolane (CAS 1383968-45-3)
- 4-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)morpholine (CAS 1402172-49-9)
- 4,4,5,5-Tetramethyl-2-(3-methyl-4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 1421340-99-9)
Recommended Standards
- 4-(2,4-Dichlorophenylsulfonyl)morpholine (CAS 74832-72-7)
- 4-(1,3-Benzothiazol-2-yl)-2,6-dichlorophenol (CAS 637302-77-3)
- 4-Phenoxyphenylboronic Acid Pinacol Ester (CAS 269410-26-6)
- 4-((3,4-Dichlorophenyl)sulfonyl)morpholine (CAS 74832-73-8)
- 2-[(2-aminoethyl)(methyl)amino]acetic acid dihydrochloride (CAS 1423033-75-3)
- Trimethyl(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)prop-1-yn-1-yl)silane (CAS 129217-85-2)
- 5-(4-Methoxyphenyl)-N-(pyridin-4-yl)oxazole-2-carboxamide (CAS 955631-53-5)
- Methyl 4-methyl-6-(propylamino)nicotinate (CAS 1355205-28-5)
- N-cyclooctyl-2H-1,3-benzodioxol-5-amine (CAS 416883-18-6)
- 3-Chloro-6-fluoroimidazo[1,2-a]pyridine (CAS 1019026-23-3)
- N-(Pyridin-3-ylmethyl)hydroxylamine dihydrochloride (CAS 915138-88-4)
- 5-(2-((tert-Butyldimethylsilyl)oxy)ethyl)-2-chlorobenzaldehyde (CAS 1911653-47-8)
- (E)-1-(4-bromophenyl)-3-((((2-chlorophenyl)carbamoyl)oxy)(methyl)amino)prop-2-en-1-one (CAS 303151-52-2)
- Renin Inhibitor Peptide (CAS 50410-01-0)
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