4,4,5,5-Tetramethyl-2-(thiophen-2-ylmethyl)-1,3,2-dioxaborolane CAS 1638933-18-2
| CAS No. | 1638933-18-2 |
| Molecular Formula | C11H17BO2S |
| Molecular Weight | 224.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
4,4,5,5-Tetramethyl-2-(thiophen-2-ylmethyl)-1,3,2-dioxaborolane (CAS 1638933-18-2) is a high-purity analytical reference standard with the molecular formula C11H17BO2S and a molecular weight of 224.13 g/mol.
4,4,5,5-Tetramethyl-2-(thiophen-2-ylmethyl)-1,3,2-dioxaborolane (C11H17BO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H17BO2S |
| Molecular Weight | 224.13 g/mol |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1993 |
| Sulfur Atoms | 1 |
Related Tetramethyl Standards
- 4,4,5,5-Tetramethyl-2-(thiophen-3-ylmethyl)-1,3,2-dioxaborolane (CAS 1444010-65-4)
- 4,4,5,5-Tetramethyl-2-(5-methylthiophen-2-yl)-1,3,2-dioxaborolane (CAS 476004-80-5)
- 4,4,5,5-Tetramethyl-2-(5-methylthiophen-3-yl)-1,3,2-dioxaborolane (CAS 874959-74-7)
- (E)-4,4,5,5-Tetramethyl-2-(2-methylhex-1-en-1-yl)-1,3,2-dioxaborolane (CAS 1808067-61-9)
- (E)-4,4,5,5-Tetramethyl-2-(2,3,3-trimethylbut-1-en-1-yl)-1,3,2-dioxaborolane (CAS 2098555-07-6)
- 4,4,5,5-Tetramethyl-2-(4-methyl-3,4-dihydro-2H-pyran-6-yl)-1,3,2-dioxaborolane (CAS 1046811-98-6)
- 4-(tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-en-1-ol (CAS 1310384-24-7)
- 2-((4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)cyclopentanone (CAS 134892-21-0)
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