4,4,5,5-Tetramethyl-2-[1-(3-methylphenyl)ethenyl]-1,3,2-dioxaborolane CAS 1867923-71-4
| CAS No. | 1867923-71-4 |
| Molecular Formula | C15H21BO2 |
| Molecular Weight | 244.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4,4,5,5-Tetramethyl-2-[1-(3-methylphenyl)ethenyl]-1,3,2-dioxaborolane (CAS 1867923-71-4), molecular formula C15H21BO2 and molecular weight 244.14 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,4,5,5-Tetramethyl-2-[1-(3-methylphenyl)ethenyl]-1,3,2-dioxaborolane (C15H21BO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 244.14 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 4,4,5,5-Tetramethyl-2-[1-(3-methylphenyl)ethenyl]-1,3,2-dioxaborolane meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C15H21BO2 |
| Molecular Weight | 244.14 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.) | 1995 |
Related Tetramethyl Standards
- (Z)-4,4,5,5-tetramethyl-2-(4-methylstyryl)-1,3,2-dioxaborolane (CAS 1192488-87-1)
- rac-4,4,5,5-tetramethyl-2-[(1R,2R)-2-phenylcyclopropyl]-1,3,2-dioxaborolane (CAS 1240492-27-6)
- 4,4,5,5-Tetramethyl-2-[(1s,2s)-2-phenylcyclopropyl]-1,3,2-dioxaborolane (CAS 1240492-43-6)
- (E)-4,4,5,5-Tetramethyl-2-(2-methylstyryl)-1,3,2-dioxaborolane (CAS 1294009-26-9)
- 4,4,5,5-Tetramethyl-2-(1-phenylcyclopropyl)-1,3,2-dioxaborolane (CAS 1314495-37-8)
- 4,4,5,5-Tetramethyl-2-(3-methylstyryl)-1,3,2-dioxaborolane (CAS 1315277-67-8)
- 4,4,5,5-Tetramethyl-2-(4-methylstyryl)-1,3,2-dioxaborolane (CAS 1377187-54-6)
- 4,4,5,5-Tetramethyl-2-((1R,2S)-2-phenylcyclopropyl)-1,3,2-dioxaborolane (CAS 1384753-69-8)
Recommended Standards
- 4,4,5,5-Tetramethyl-2-(2-phenylallyl)-1,3,2-dioxaborolane (CAS 182810-44-2)
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- (5-(Difluoromethyl)-2-fluoro-3-(trifluoromethyl)pyridin-4-yl)methanamine (CAS 1806989-78-5)
- (2R,3S,4R)-2,3,4-Trihydroxy-6-oxohexyl dihydrogen phosphate (CAS 3573-50-0)
- tert-butyl 3-((((2,4-dichloropyrimidin-5-yl)methyl)(methyl)amino)methyl)piperidine-1-carboxylate (CAS 1420841-26-4)
- 3-Nitro-2-oxazolidinone (CAS 85430-60-0)
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- 2-Thia-1-azabicyclo[3.1.0]hexane 2,2-dioxide (CAS 291514-09-5)
- (2S)-2-(((4AR,6S,7R,8R,8aS)-7-acetamido-6-(benzyloxy)-2-phenylhexahydropyrano[3,2-d][1,3]dioxin-8-yl)oxy)propanoic acid (CAS 730911-70-3)
- Nebivolol Impurity 83 (CAS CATO-C4X-196883)
- 103244-41-3 Insulin-like Growth Factor-II fragment 33-40 Ser-Arg-Val-Ser-Arg-Arg-Ser-Arg (CAS 103244-41-3)
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