(5-Methyl-3-phenylisoxazol-4-yl)boronic acid CAS 491876-01-8
| CAS No. | 491876-01-8 |
| Molecular Formula | C10H10BNO3 |
| Molecular Weight | 203.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(5-Methyl-3-phenylisoxazol-4-yl)boronic acid (CAS 491876-01-8), molecular formula C10H10BNO3 and molecular weight 203.00 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (5-Methyl-3-phenylisoxazol-4-yl)boronic acid (C10H10BNO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.5, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 203.00 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (5-Methyl-3-phenylisoxazol-4-yl)boronic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H10BNO3 |
| Molecular Weight | 203.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- 2-(5-Phenylisoxazol-4-yl)acetic acid (CAS 155602-50-9)
- 2-(3-Phenylisoxazol-5-yl)acetic acid (CAS 3919-84-4)
- 4-Acetyl-3-phenylisoxazol-5(4H)-one (CAS 50401-64-4)
- (5-Ethyl-3-phenylisoxazol-4-yl)methanol (CAS 99299-07-7)
- 1-(5-Methyl-3-phenylisoxazol-4-yl)ethan-1-ol (CAS 6497-24-1)
- 2-(3-Methyl-5-phenylisoxazol-4-yl)ethan-1-ol (CAS 401632-47-1)
- 3-(3-Phenylisoxazol-5-yl)propan-1-ol (CAS 54901-66-5)
- N-(3-Phenylisoxazol-5-yl)acetamide (CAS 31301-40-3)
Recommended Standards
- (4-(Prop-2-yn-1-ylcarbamoyl)phenyl)boronic acid (CAS 874459-89-9)
- (8-Methoxyquinolin-4-yl)boronic acid (CAS 2323596-17-2)
- (3-Cyano-4-(oxetan-3-yl)phenyl)boronic acid (CAS 2256708-83-3)
- (8-Methoxyquinolin-6-yl)boronic acid (CAS 2230902-52-8)
- 2-Bromo-3,6-difluorophenol (CAS 1208077-18-2)
- 4-Chlorothiobenzamide-2,3,5,6-d4 (CAS 1219802-58-0)
- 5-Fluoro-2-methylbenzofuran-4-amine (CAS 141976-75-2)
- 2,6-Dichloro-N1-(2-(diethylamino)ethyl)benzene-1,4-diamine (CAS 1708255-07-5)
- 2-Chloro-6-isopropylnicotinaldehyde (CAS 1289160-67-3)
- 1-[6-Methyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl]piperazine hydrochloride (CAS 2377609-42-0)
- 1-(5-Chloro-2-methoxybenzoyl)piperidine-4-carboxylic acid (CAS 1016703-61-9)
- Methyl (4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)carbamate (CAS 69544-08-7)
- Mirabegron Impurity 55 (CAS 1884646-38-1)
- Hexapeptide-9 (CAS 885024-94-2)
Why CATO?
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