2-Phenylbenzo[d]isoxazol-3(2H)-one CAS 65685-42-9
| CAS No. | 65685-42-9 |
| Molecular Formula | C13H9NO2 |
| Molecular Weight | 211.22 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.
2-Phenylbenzo[d]isoxazol-3(2H)-one (CAS 65685-42-9), molecular formula C13H9NO2 and molecular weight 211.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Phenylbenzo[d]isoxazol-3(2H)-one (C13H9NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 211.22 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 2-Phenylbenzo[d]isoxazol-3(2H)-one 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 | C13H9NO2 |
| Molecular Weight | 211.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
Related Phenylbenzo Standards
- 2-Phenylbenzo[d]oxazol-6-ol (CAS 116496-30-1)
- 3-Phenylbenzo[d]isoxazol-6-ol (CAS 136741-67-8)
- 5-Phenylbenzo[d]thiazole (CAS 91804-56-7)
- 5-Phenylbenzo[b]thiophene (CAS 107411-26-7)
- 2-Phenylbenzo[b]thiophene (CAS 1207-95-0)
- 3-Phenylbenzo[b]thiophene (CAS 14315-12-9)
- 5-Phenylbenzo[d]oxazol-2-amine (CAS 1126637-54-4)
- 2-Phenylbenzo[d]oxazol-4-amine (CAS 848564-71-6)
Recommended Standards
- 2-PHENYL-7H-PYRROLO[2,3-D]PYRIMIDIN-4-OL (CAS 91493-94-6)
- 2-Phenylimidazo[1,2-a]pyrazin-3(7H)-one (CAS 27955-58-4)
- 2-Phenyl-2H-benzo[d][1,2,3]triazole 1-oxide (CAS 51750-18-6)
- 2-Phenylpyrazolo[1,5-a]pyrimidin-5(4H)-one (CAS 79039-17-1)
- ((5-Methylbenzo[c][1,2,5]thiadiazol-4-yl)sulfonyl)proline (CAS 436811-15-3)
- 1-tert-butyl-3-fluoropyrrolidine-3-carboxylic acid hydrochloride (CAS 1803584-91-9)
- 2,5-Dimethyl-3-(3,5-dimethylphenyl)propiophenone (CAS 898780-66-0)
- (3R,7S,17R)-12-fluoro-17-methyl-2,16-dioxa-8,14,19,23,24,26-hexaazahexacyclo[22.3.1.0³,⁷.0⁸,²⁷.0¹⁰,¹⁵.0²¹,²⁵]octacosa-1(28),10,12,14,21(25),22,26-heptaen-20-one (CAS 2359650-19-2)
- 2-(3-bromo-4-methylphenyl)acetonitrile (CAS 1261618-06-7)
- 2-Cyano-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide (CAS 70373-49-8)
- Bumetanide Impurity 65 (CAS CATO-C4X-198665)
- trans-4-Amino-N-cyclopropylcyclohexanecarboxamide hydrochloride 1013111-83-5 A1-00474 (CAS 1013111-83-5)
- Minoxidil Impurity 64 (CAS CATO-C4X-170064)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
Why CATO?
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