2-(3-Oxo-4-propyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid CAS 685107-81-7
| CAS No. | 685107-81-7 |
| Molecular Formula | C19H17NO5 |
| Molecular Weight | 339.34 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 2-(3-Oxo-4-propyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid.
CATO supplies 2-(3-Oxo-4-propyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid (CAS 685107-81-7), a certified reference material (molecular formula C19H17NO5, MW 339.34 g/mol) for analytical method development and quality control.
2-(3-Oxo-4-propyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)benzoic acid (C19H17NO5) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C19H17NO5 |
| Molecular Weight | 339.34 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.) | 1985 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 2-(3-Ethoxy-4-fluorophenylsulfonamido)benzoic acid (CAS 927637-19-2)
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