4-Methylbenzoxazol-2(3H)-one CAS 78258-80-7
| CAS No. | 78258-80-7 |
| Molecular Formula | C8H7NO2 |
| Molecular Weight | 149.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Methylbenzoxazol-2(3H)-one.
CATO supplies 4-Methylbenzoxazol-2(3H)-one (CAS 78258-80-7), a certified reference material (molecular formula C8H7NO2, MW 149.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H7NO2, 4-Methylbenzoxazol-2(3H)-one contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 149.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C8H7NO2 |
| Molecular Weight | 149.15 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.) | 1979 |
| Nitrogen Atoms | 1 |
Related Methylbenzoxazol Standards
Recommended Standards
- 4-Methyl-1H-pyrazolo[3,4-d]pyrimidin-6-amine (CAS 859297-02-2)
- 4-Methylpyrazolo[1,5-a]pyrimidin-5(4H)-one (CAS 29274-25-7)
- 4-Methyl-1H-pyrazolo[3,4-b]pyridin-3(2H)-one (CAS 28491-62-5)
- 4-Methylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 77494-09-8)
- 4-(Furan-2-yl)-2-hydroxybenzonitrile (CAS 1261963-18-1)
- 3,5-Dichloro-4-hydroxybenzoic Acid (CAS 3336-41-2)
- 3-Chloro-N-isopropyl-5-(trifluoromethyl)-2-pyridinamine (CAS 1036436-75-5)
- Bendamustine Impurity N20 (CAS 1219709-86-0)
- N-((2-fluorophenyl)carbamothioyl)benzamide (CAS 73999-10-7)
- (E)-5-Fluoropent-2-ene-1,4-diamine (CAS 82006-58-4)
- 3-Cyclopropoxy-N,2-dimethylaniline (CAS 1243328-61-1)
- Atogepant Monohydrate (CAS 1488325-98-9)
- 4-Bromopyridine-3-boronic acid pinacol ester (CAS 2096334-82-4)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com