3-Methyl-4-phenylisoxazole CAS 25388-20-9
| CAS No. | 25388-20-9 |
| Molecular Formula | C10H9NO |
| Molecular Weight | 159.18 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.
3-Methyl-4-phenylisoxazole (CAS 25388-20-9) is a high-purity analytical reference standard with the molecular formula C10H9NO and a molecular weight of 159.18 g/mol.
Structurally, 3-Methyl-4-phenylisoxazole (C10H9NO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 159.18 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 3-Methyl-4-phenylisoxazole 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 | C10H9NO |
| Molecular Weight | 159.18 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 |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- 5-Methyl-3-phenylisoxazole (CAS 1008-74-8)
- 3-Methyl-5-phenylisoxazole (CAS 1008-75-9)
- 4-Methyl-5-phenylisoxazole (CAS 14677-22-6)
- 4-Methyl-3-phenylisoxazole (CAS 24956-37-4)
- 5-Methyl-4-phenylisoxazole (CAS 23253-49-8)
- 3-Phenylisoxazole-5-carbonitrile (CAS 1011-39-8)
- 5-Phenylisoxazole-3-carbonitrile (CAS 14442-24-1)
- 3-Phenylisoxazole (CAS 1006-65-1)
Recommended Standards
- 3-Methyl-3-phenyloxirane-2-carbonitrile (CAS 28937-48-6)
- 3-Methyl-4-quinolinol (CAS 64965-46-4)
- 3-Methyl-1H-indole-5-carbaldehyde (CAS 3613-07-8)
- 3-Methyl-8-hydroxyquinoline (CAS 75457-13-5)
- 2-(5-Fluorothiophen-2-yl)acetic acid (CAS 1378843-23-2)
- (4-Cyclopropyl-1,3-thiazol-2-yl)methanol hydrochloride (CAS 1993232-16-8)
- 4-Bromo-2-methoxy-5-nitrobenzoic acid (CAS 98434-33-4)
- 3-Methyl-7-(2-oxo-2-phenylethyl)-6,7-dihydro-5H-imidazo[2,1-b]thiazol-4-ium bromide (CAS 139313-11-4)
- (3S)-3-amino-1-methylazepan-2-one (CAS 209983-96-0)
- 1-Fluoro-2-methoxynaphthalene (CAS 27602-71-7)
- Ethyl 5-formyl-6-phenylimidazo[2,1-b]thiazole-3-carboxylate (CAS 752244-07-8)
- 4-(5-Amino-1H-indol-3-yl)cyclohexanone hydrochloride (CAS 1416439-27-4)
- 2-((6-Chloropyrazin-2-yl)(ethyl)amino)ethan-1-ol (CAS 1219967-25-5)
- Liraglutide(13-31)TFA Salt (CAS CATO-C4X-19929)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com