2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid CAS 26513-80-4
| CAS No. | 26513-80-4 |
| Molecular Formula | C16H11NO5 |
| Molecular Weight | 297.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 297.26 g/mol gives 2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid (CAS 26513-80-4), molecular formula C16H11NO5 and molecular weight 297.26 g/mol, is a CATO reference standard with documented purity and traceability.
2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid (C16H11NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. 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.
As a certified reference material (CRM), 2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid 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.
Physical & Chemical Properties
| Molecular Formula | C16H11NO5 |
| Molecular Weight | 297.26 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
Related Oxo Standards
- 4-((2,3-Dihydro-2-methyl-3-oxobenzo[b][1,4]oxazin-4-yl)methyl)benzoic Acid (CAS 900706-47-0)
- N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-β-oxobenzenepropanamide (CAS 301157-17-5)
- rac Dihydro Mebendazole (CAS 60254-95-7)
- 1-(3,4-Dihydro-2H-pyrrol-5-yl)-1-(3-fluorophenyl)-3-phenylurea (CAS 898414-72-7)
- 3-[(1-Acetyl-2,3-dihydro-1H-indol-5-yl)sulfonyl]-propanoic acid (CAS 841275-85-2)
- Methyl 2-(5,6-dihydro-1,4-dioxine-2-carboxamido)-4,5-dimethylthiophene-3-carboxylate (CAS 896616-30-1)
- 10,11-Dihydro-N-(2-hydroxyethyl)-N-methyl-5H-pyrido[2,3-c][2]benzazepine-10-carboxamide (CAS 1071504-81-8)
- 1,4-Dihydro-9-[(4-methylphenyl)sulfonyl]naphthalen-1,4-imine (CAS 28035-71-4)
Recommended Standards
- 2-((2,4-Dinitrophenyl)amino)-3-methylpentanoic acid (CAS 879276-54-7)
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- 1,3-Dioxoisoindolin-2-yl 4-methoxybenzoate (CAS 67695-80-1)
- 3-(5-((3-Methyl-5-oxoisoxazol-4(5H)-ylidene)methyl)furan-2-yl)benzoic acid (CAS 884497-55-6)
- Benzyl (1R,3S,5S)-3-(hydroxymethyl)-8-azabicyclo[3.2.1]octane-8-carboxylate (CAS 1629128-52-4)
- 4-Chloro-2,7-dimethylquinazoline (CAS 1444351-21-6)
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- 2-Fluoro-6-nitroanisole (CAS 484-94-6)
- 1-(3,5-Dichlorophenyl)-2,5-dimethyl-1H-pyrrole-3-carbaldehyde (CAS 347331-67-3)
- 1-(3,4-Dichlorophenyl)-3-(4-methoxyphenyl)propan-1-one (CAS 898776-31-3)
- (Ser(PO?H?)3??·???)-Tau Peptide (379-408) trifluoroacetate salt (CAS 2022956-60-9)
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