1,2-Benzisoxazol-6-ol CAS 65685-55-4
| CAS No. | 65685-55-4 |
| Molecular Formula | C7H5NO2 |
| Molecular Weight | 135.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1,2-Benzisoxazol-6-ol 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.
CATO supplies 1,2-Benzisoxazol-6-ol (CAS 65685-55-4), a certified reference material (molecular formula C7H5NO2, MW 135.12 g/mol) for analytical method development and quality control.
The molecular framework of 1,2-Benzisoxazol-6-ol (C7H5NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C7H5NO2 |
| Molecular Weight | 135.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
Related Benzisoxazol Standards
- 1,2-Benzisoxazol-3-amine (CAS 36216-80-5)
- 1,2-BENZISOXAZOL-3(2H)-ONE 1,2-BENZISOXAZOL-3-OL 1,2-BENZOXAZOL-3-OL 21725-69-9 3-HYDROXY-1,2-BENZISOXAZOLE AS06287 benzo[d]isoxazol-3-ol (CAS 21725-69-9)
- 4-Methyl-1,2-benzisoxazol-3(2H)-one (CAS 1195552-73-8)
- 5-Methyl-1,2-benzisoxazol-3(2H)-one (CAS 65685-49-6)
- 6-Methyl-1,2-benzisoxazol-3-ol (CAS 66571-26-4)
- 1,2-Benzisoxazol-3-ylacetyl chloride 84637-43-4 (CAS 84637-43-4)
- 2-(3-Phenyl-2,1-benzisoxazol-5-yl)-2H-tetrazole-5-carboxylic Acid (CAS 951896-38-1)
Recommended Standards
- 1,1-Dimethoxy-2-nitroethane (CAS 69425-53-2)
- 1,2-dihydropyrazolo[4,3-c]pyridin-3-one (CAS 3268-73-3)
- 1-(Prop-2-yn-1-yl)-2,5-dihydro-1h-pyrrole-2,5-dione (CAS 209395-32-4)
- 1,3-Benzoxazol-4-ol (CAS 89590-22-7)
- 2-(2-(Thiophen-2-ylmethoxy)ethoxy)ethane-1-sulfonyl chloride (CAS 1341701-41-4)
- N2,N6-dimethyl-4-(trifluoromethyl)pyridine-2,6-dicarboxamide (CAS 1092344-40-5)
- 4-(3-Chloro-2,2-dimethylpropyl)thiazole (CAS 1495590-37-8)
- 3-(2-Chlorobenzyl)piperidinehydrochloride (CAS 1172241-03-0)
- 2-([1,1'-Biphenyl]-4-yloxy)-N'-(furan-2-ylmethylene)propanehydrazide (CAS 303085-23-6)
- 1-Cyclohexyl-1H-imidazo[4,5-b]pyridin-2-ol (CAS 906532-83-0)
- (R)-2-Amino-2-(5-(trifluoromethyl)pyridin-2-yl)ethan-1-ol (CAS 1213457-19-2)
- 3-Nitro-4-(propylamino)benzonitrile (CAS 438554-06-4)
- 1-Benzyl-3-(((tert-butyldimethylsilyl)oxy)methyl)piperidin-4-ol (CAS 934536-18-2)
- Semaglutide impurity 210 (CAS CATO-C4X-2226210)
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