1-(2-Cyanophenyl)pyrazole-4-boronic acid, pinacol ester CAS 1402166-71-5
| CAS No. | 1402166-71-5 |
| Molecular Formula | C16H18BN3O2 |
| Molecular Weight | 295.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1-(2-Cyanophenyl)pyrazole-4-boronic acid, pinacol ester (C16H18BN3O2) is characterized by a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-(2-Cyanophenyl)pyrazole-4-boronic acid, pinacol ester (CAS 1402166-71-5) is a high-purity analytical reference standard with the molecular formula C16H18BN3O2 and a molecular weight of 295.14 g/mol.
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), 1-(2-Cyanophenyl)pyrazole-4-boronic acid, pinacol ester 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 | C16H18BN3O2 |
| Molecular Weight | 295.14 g/mol |
| Appearance | Pale yellow to 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) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
Related Cyanophenyl Standards
- methyl 1-(3-cyanophenyl)-3-(trifluoromethyl)-1H-pyrazole-5-carboxylate (CAS 1055070-43-3)
- 4-Cyanophenyl 1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylate (CAS 320423-24-3)
- 2-[1-(2-Cyanophenyl)-1H-pyrrol-2-yl]-N,N-diethyl-2-oxoacetamide (CAS 866010-82-4)
- 2-[1-(4-Cyanophenyl)-1H-pyrrol-2-yl]-N,N-diethyl-2-oxoacetamide (CAS 866010-76-6)
- N-((4-cyanophenyl)carbamothioyl)-4-methylbenzamide (CAS 642946-02-9)
- n-(4-Cyanophenyl)-4-(4-methylphenoxy)butanamide (CAS 793692-57-6)
- N-(3-Cyanophenyl)-6-methyl-4-oxo-4,5-dihydro-[1,2,3]triazolo[1,5-a]pyrazine-3-carboxamide (CAS 1396674-07-9)
- 2-(2-Cyanophenyl)-1-oxo-1,2,3,6,7,7a-hexahydro-3a,6-epoxyisoindole-7-carboxylic acid (CAS 1005151-04-1)
Recommended Standards
- (2E)-1-(3,4-Dichlorophenyl)-3-(3-fluorophenyl)prop-2-en-1-one (CAS 1354942-33-8)
- 4-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)benzonitrile (CAS 1402166-72-6)
- 1-(2-Bromopentyl)-4-(trifluoromethyl)benzene (CAS 1344060-67-8)
- (2E)-1-(2,4-Dichlorophenyl)-3-(2-fluorophenyl)prop-2-en-1-one (CAS 1581273-82-6)
- 6-Ethynylcinnoline (CAS 318276-71-0)
- tert-Butyl(5,6-dichloropyridin-3-yl)carbamate (CAS 275383-96-5)
- 1-Benzyl-2-chloro-1H-benzo[d]imidazole (CAS 43181-78-8)
- Cynatratoside A (CAS 97399-96-7)
- Iobitridol Impurity 7 (CAS CATO-C4X-31787)
- Endrin-Ketone (CAS 53494-70-5)
- 5-Methylisoxazole-3-carboxamide (CAS 3445-52-1)
- (R)-6-((tert-Butoxycarbonyl)amino)-2-((1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl)amino)hexanoic acid (CAS 1272754-98-9)
- Bilastine impurity 118 (CAS 1178710-88-7（free base）)
- [pGlu] Semaglutide (CAS CATO-C4X-2226288)
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