(1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazol-3-yl)boronic acid CAS 256345-56-9
| CAS No. | 256345-56-9 |
| Molecular Formula | C9H19BN2O3Si |
| Molecular Weight | 242.16 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.
(1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazol-3-yl)boronic acid (CAS 256345-56-9), molecular formula C9H19BN2O3Si and molecular weight 242.16 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazol-3-yl)boronic acid (C9H19BN2O3Si) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 1.5, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 242.16 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H19BN2O3Si |
| Molecular Weight | 242.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.5 |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Trimethylsilyl Standards
- (1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-imidazol-4-yl)boronic acid (CAS 1682660-96-3)
- (1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)boronic acid (CAS 188978-35-0)
- (1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)boronic acid (CAS 188978-71-4)
- 1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazole-4-carboxylic acid (CAS 1917352-28-3)
- 1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-imidazole-4-carboxylic acid (CAS 854123-77-6)
- 3-((2-(Trimethylsilyl)ethoxy)methyl)pyrimidine-2,4(1H,3H)-dione (CAS 464216-37-3)
- Bis(trimethylsilyl) sulfate (CAS 18306-29-1)
- 1,8-Bis(trimethylsilyl)octa-1,3,5,7-tetrayne (CAS 37166-58-8)
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