4-Bromo-3,5-diethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole CAS 2550661-40-8
| CAS No. | 2550661-40-8 |
| Molecular Formula | C13H25BrN2OSi |
| Molecular Weight | 333.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-3,5-diethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 2550661-40-8), molecular formula C13H25BrN2OSi and molecular weight 333.34 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, bromine substitution, 4-Bromo-3,5-diethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 333.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 4-Bromo-3,5-diethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole 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 | C13H25BrN2OSi |
| Molecular Weight | 333.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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