4,4,5,5-Tetramethyl-2-(2-(2-methylcyclopropyl)phenyl)-1,3,2-dioxaborolane CAS 2621936-38-5
| CAS No. | 2621936-38-5 |
| Molecular Formula | C16H23BO2 |
| Molecular Weight | 258.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4,4,5,5-Tetramethyl-2-(2-(2-methylcyclopropyl)phenyl)-1,3,2-dioxaborolane (CAS 2621936-38-5), a certified reference material (molecular formula C16H23BO2, MW 258.16 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 4,4,5,5-Tetramethyl-2-(2-(2-methylcyclopropyl)phenyl)-1,3,2-dioxaborolane is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 258.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C16H23BO2 |
| Molecular Weight | 258.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
Related Tetramethyl Standards
- 4,4,5,5-Tetramethyl-2-(1,2,3,4-tetrahydronaphthalen-2-yl)-1,3,2-dioxaborolane (CAS 1130490-92-4)
- (Z)-4,4,5,5-Tetramethyl-2-(1-phenylbut-1-en-2-yl)-1,3,2-dioxaborolane (CAS 1217435-93-2)
- 4,4,5,5-Tetramethyl-2-(3-methyl-2,3-dihydro-1H-inden-4-yl)-1,3,2-dioxaborolane (CAS 2621933-83-1)
- 4,4,5,5-Tetramethyl-2-(5,6,7,8-tetrahydronaphthalen-1-yl)-1,3,2-dioxaborolane (CAS 929031-44-7)
- 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-carboxylic acid (CAS 1010836-19-7)
- 4,4,5,5-Tetramethyl-2-(3-methylbenzofuran-2-yl)-1,3,2-dioxaborolane (CAS 1072811-97-2)
- 4,4,5,5-Tetramethyl-2-(7-methylbenzofuran-2-yl)-1,3,2-dioxaborolane (CAS 1072812-57-7)
- 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazole (CAS 1107627-02-0)
Recommended Standards
- 3,5-Bis(trifluoromethyl)ethoxybenzene (CAS 368-67-2)
- 2-Bromo-4,6-diisopropylpyrimidin-5-amine (CAS 2387294-66-6)
- 2-[(1E)-2-(4-Ethylphenyl)ethenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 870717-91-2)
- 5,6,7,8-Tetrahydronaphthalene-2-boronic Acid Pinacol Ester (CAS 627526-54-9)
- 2-(6,8-Dibromoquinolin-2-yl)phenol (CAS 860784-08-3)
- n-(1-Phenylethyl)aniline (CAS 779-54-4)
- 1-(4-Amino-5H-pyrrolo[3,4-d]pyrimidin-6(7H)-yl)ethanone (CAS 1854-45-1)
- 2-(Cyclohex-2-en-1-yloxy)tetrahydrofuran (CAS 151252-07-2)
- Glycol dimercaptoacetate (CAS 123-81-9)
- Ethyl 6-chloroimidazo[1,2-b]pyridazine-8-carboxylate (CAS 1161847-33-1)
- 1-(2-(2-aminoethyl)-4,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethan-1-one (CAS CATO-C3D-262303)
- Ursodeoxycholic Acid impurity 91 (CAS CATO-C4X-142291)
- 1-(5-((9-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)amino)-4-methyltetrahydrofuran-3-yl)ethanone (CAS 97994-65-5)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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 18665070610 / Nicole.chen@cato-chem.com