(Phenylethynyl)boronic acid CAS 918487-96-4
| CAS No. | 918487-96-4 |
| Molecular Formula | C8H7BO2 |
| Molecular Weight | 145.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of (Phenylethynyl)boronic acid (C8H7BO2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional 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).
(Phenylethynyl)boronic acid (CAS 918487-96-4) is a high-purity analytical reference standard with the molecular formula C8H7BO2 and a molecular weight of 145.95 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), (Phenylethynyl)boronic acid 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 | C8H7BO2 |
| Molecular Weight | 145.95 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Related Phenylethynyl Standards
- 4-(Phenylethynyl)-1H-pyrazole (CAS 82099-93-2)
- 2-(Phenylethynyl)pyridine (CAS 13141-42-9)
- 3-(pHenylethynyl)pyridine (CAS 13238-38-5)
- 4-(Phenylethynyl)pyridine (CAS 13295-94-8)
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- 3-(Phenylethynyl)thiophene (CAS 131423-29-5)
- 2-(Phenylethynyl)thiophene (CAS 4805-17-8)
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Recommended Standards
- (4-Methoxy-4-oxobutyl)boronic acid (CAS 375391-72-3)
- Iodomethane-13C,d3 (Copper Wire Stabilized) (CAS 20710-47-8)
- (4-ethynylphenyl)boronic acid (CAS 263368-72-5)
- (Dimethylamino)phosphonous Dichloride 683-85-2 D3245 Dichloro(dimethylamino)phosphine (CAS 683-85-2)
- 2-Bromo-5-(4-methoxyphenyl)-1,3,4-thiadiazole (CAS 57709-54-3)
- Isoquinolin-7-yldimethylphosphine oxide (CAS 2741265-19-8)
- 5,6-Difluoroindolin-2-one (CAS 71294-07-0)
- Ethyl 1-(4-amino-1,2,5-oxadiazol-3-yl)-5-phenyl-1H-1,2,3-triazole-4-carboxylate (CAS 296769-60-3)
- 1-Benzyl-4-ethoxy-1h-indole-2-carboxylic acid (CAS 1240568-78-8)
- 4-Bromo-5-(2,2-difluoroethyl)-1-methyl-1H-pyrazole (CAS 2306262-80-4)
- (1,2,3,4-Tetrahydroisoquinolin-8-yl)methanol (CAS 1204765-85-4)
- 2-Fluorobicyclo[1.1.1]pentane-1,3-dicarboxylic acid (CAS 2731009-62-2)
- 5-Methyl-2-phenylquinoline-4-carboxylic Acid (CAS 174636-96-5)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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