1-(2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)-1H-pyrazole CAS 957061-20-0
| CAS No. | 957061-20-0 |
| Molecular Formula | C17H23BN2O3 |
| Molecular Weight | 314.19 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-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)-1H-pyrazole (CAS 957061-20-0) is a high-purity analytical reference standard with the molecular formula C17H23BN2O3 and a molecular weight of 314.19 g/mol.
The molecular framework of 1-(2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)-1H-pyrazole (C17H23BN2O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 1-(2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)-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 | C17H23BN2O3 |
| Molecular Weight | 314.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Tetramethyl Standards
- 1-{2-[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy]ethyl}imidazole (CAS 1201790-12-6)
- 4,4,5,5-Tetramethyl-2-(4-(1,1,1-trifluoro-2-methylpropan-2-yl)phenyl)-1,3,2-dioxaborolane (CAS 1432571-98-6)
- 4,4,5,5-Tetramethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3,2-dioxaborolane (CAS 853998-14-8)
- 3-(2,3,5,9-Tetramethyl-7-oxo-7h-furo[3,2-g]chromen-6-yl)propanoic acid (CAS 777857-45-1)
- 1,1,3,3-Tetramethyl-1,3-di-p-tolyldisiloxane (CAS 18055-70-4)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)benzamide (CAS 1350426-21-9)
- 2-Benzyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-azaspiro[3.3]heptane (CAS 2706615-30-5)
- Ethyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-2-carboxylate (CAS 1313760-79-0)
Recommended Standards
- (4-(9,9-Dimethyl-9H-fluoren-2-yl)phenyl)boronic acid (CAS 736928-21-5)
- 2-((5-(3,4-Dichlorophenyl)furan-2-yl)methylene)hydrazinecarbothioamide (CAS 93249-08-2)
- 2-(5-Iodo-2-methylbenzyl)thiophene (CAS 1823416-37-0)
- 2-(Methoxymethyl)-7-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoxaline (CAS 2172977-35-2)
- Benzoic acid, 2,3,4,5-tetrachloro-6-cyano-, methyl ester (CAS 5358-06-5)
- 1-(1H-Indazol-6-yl)ethanone (CAS 189559-85-1)
- 5-methyl-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a][1,4]diazepine-2-carboxylic acid (CAS 1824301-46-3)
- 3-Bromo-1-(tetrahydro-2h-pyran-2-yl)-1h-1,2,4-triazole (CAS 1214900-96-5)
- 7-Bromo-1-iodonaphthalene (CAS 1261767-53-6)
- 3-(Cyclohexyloxy)-2-ethylphenol (CAS 1243281-47-1)
- VE 821 (CAS 1232410-49-9)
- N-Me-D-Lys-OH.HCl (CAS 2044709-87-5)
- 3,4-Dichloro-3-(2-thiomethylphenyl)propiophenone (CAS 898780-52-4)
- (Ser(PO?H?)2?2)-Tau Peptide (260-264) PAb Blocking trifluoroacetate salt (CAS 2022956-57-4)
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