5-Methoxy-1H-benzo[d][1,3]oxazin-2(4H)-one CAS 1780189-83-4
| CAS No. | 1780189-83-4 |
| Molecular Formula | C9H9NO3 |
| Molecular Weight | 179.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-Methoxy-1H-benzo[d][1,3]oxazin-2(4H)-one (C9H9NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 179.17 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 supplies 5-Methoxy-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 1780189-83-4), a certified reference material (molecular formula C9H9NO3, MW 179.17 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Methoxy-1H-benzo[d][1,3]oxazin-2(4H)-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 | C9H9NO3 |
| Molecular Weight | 179.17 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, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 5-Methoxy-2,4-dihydro-1,4-benzoxazin-3-one (CAS 1058704-50-9)
- 7-Methoxy-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 1187195-69-2)
- 7-Methoxy-2,3-dihydro-4H-pyrano[2,3-b]pyridin-4-one (CAS 1196156-60-1)
- 8-Methoxy-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 1781048-50-7)
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Recommended Standards
- [(3-methylphenyl)carbamoyl]formic acid (CAS 17738-78-2)
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- 3’-Nitropropiophenone (CAS 17408-16-1)
- 1,4-Bis(2-methyl-1H-imidazol-1-yl)benzene (CAS 1347702-71-9)
- 2-(2-Methoxypropan-2-yl)aniline (CAS 2844382-97-2)
- 1-(2,6-Dichlorophenyl)-1h-1,2,3-triazole-5-carboxylic acid (CAS 1492720-78-1)
- Vonoprazan Impurity 160 (CAS 2514735-12-5)
- 7-Chloro-3-methyl-2-(phenylmethoxy)-1,8-naphthyridine (CAS 846035-09-4)
- 2-chloro-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 847801-93-8)
- 2-Benzyl-1-(2,2-dimethyl-8,8α-dihydro-3α,H-indeno[1,2-d]oxazol-3yl)-3-oxiranyl-propan-1-one (CAS 158512-24-4)
- (E)-3-(Carbamimidoylthio)acrylic acid (CAS 103232-23-1)
- N-cyclopropyl-6-[4-(methylamino)piperidin-1-yl]pyrimidin-4-amine;hydrochloride (CAS 1353953-70-4)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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