Pyrazole-3-boronic Acid CAS 376584-63-3
| CAS No. | 376584-63-3 |
| Molecular Formula | C3H5BN2O2 |
| Molecular Weight | 111.90 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.
Pyrazole-3-boronic Acid (CAS 376584-63-3), molecular formula C3H5BN2O2 and molecular weight 111.90 g/mol, is a CATO reference standard with documented purity and traceability.
Pyrazole-3-boronic Acid (C3H5BN2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), Pyrazole-3-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 | C3H5BN2O2 |
| Molecular Weight | 111.90 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Pyrazole Standards
- 1H-Pyrazole-3-carboxylic acid (CAS 1621-91-6)
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- 1H-Pyrazole-1-carboxamide (CAS 931-08-8)
- 1H-Pyrazole-3-carbaldehyde oxime (CAS 30192-58-6)
- Pyrazole-3-carboxamide (CAS 33064-36-7)
- 1H-Pyrazole-1-carboximidamide (CAS 4023-00-1)
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Recommended Standards
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- (2-Cyclopropylvinyl)boronic acid (CAS 1121058-18-1)
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- 2',3',5',6'-Tetrahydrospiro[indene-1,4'-pyran] (CAS 116540-04-6)
- (S)-3-(5-Fluoro-pyrimidin-2-yloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester (CAS 1261232-38-5)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
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