2-(4-Hydroxyphenyl)benzo[d]oxazol-6-ol CAS 139407-74-2
| CAS No. | 139407-74-2 |
| Molecular Formula | C13H9NO3 |
| Molecular Weight | 227.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 227.22 g/mol gives 2-(4-Hydroxyphenyl)benzo[d]oxazol-6-ol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-(4-Hydroxyphenyl)benzo[d]oxazol-6-ol (CAS 139407-74-2), a certified reference material (molecular formula C13H9NO3, MW 227.22 g/mol) for analytical method development and quality control.
2-(4-Hydroxyphenyl)benzo[d]oxazol-6-ol (C13H9NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H9NO3 |
| Molecular Weight | 227.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
Related Hydroxyphenyl Standards
- 2-(4-Hydroxyphenyl)benzo[d]oxazol-5-ol (CAS 142629-43-4)
- 2-(4-Hydroxyphenyl)-N-phenylacetamide (CAS 131179-71-0)
- n-(2-Hydroxyphenyl)-2-methylbenzamide (CAS 17847-71-1)
- N-(2-Hydroxyphenyl)-2-phenylacetamide (CAS 95384-58-0)
- N-(2-hydroxyphenyl)-N-phenylacetamide (CAS 861613-67-4)
- N-(4-hydroxyphenyl)-3-methylbenzamide (CAS 314751-32-1)
- N-(4-hydroxyphenyl)-4-methylbenzamide (CAS 23646-69-7)
- 4-(4-Hydroxyphenyl)thiomorpholine 1,1-dioxide (CAS 103661-13-8)
Recommended Standards
- Methyl 2-methyl-2-(3-methyl-4-nitro-1H-pyrazol-1-yl)propanoate (CAS 1393102-03-8)
- 1-Ethyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid (CAS 139756-17-5)
- 3-(3-Oxo-5,6-dihydro-3h-[1,2,4]triazolo[3,4-c][1,4]oxazin-2(8h)-yl)butanoic acid (CAS 1384430-94-7)
- 4-(5-Methyl-3-nitro-1H-pyrazol-1-yl)butanehydrazide (CAS 1415719-20-8)
- Ethyl 3-Boc-3-azabicyclo[3.1.0]hexane-1-carboxylate (CAS 1204820-62-1)
- 6-Fluoro-7-methyl-1H-pyrrolo[3,2-b]pyridine (CAS 1190320-59-2)
- 1-Methylazepane-4-carboxylic acid (CAS 1027512-62-4)
- N-{3-cyano-4H,5H,6H-cyclopenta[b]thiophen-2-yl}-2-{[3-cyano-6-(3,4-dimethoxyphenyl)-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}acetamide (CAS 625369-48-4)
- 4-Amino-N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)benzamide (CAS 861099-78-7)
- 4-(6-Chloro-3-nitro-4-(trifluoromethyl)pyridin-2-yl)morpholine (CAS 1351479-02-1)
- Tert-butyl (R)-4-bromo-2-methyl-2-(methylsulfonyl)butanoate (CAS 1678527-71-3)
- 7-Oxabicyclo[4.1.0]heptane-3-carboxylic acid, 7-oxabicyclo[4.1.0]hept-3-ylmethyl ester, polymer with ethenylbenzene and 2-propenenitrile (CAS 145417-44-3)
- 3-(Benzofuran-2-yl)-5-ethoxy-3,4-dihydro-2H-pyrrole (CAS 75292-88-5)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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