3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid CAS 24132-22-7
| CAS No. | 24132-22-7 |
| Molecular Formula | C9H7NO4 |
| Molecular Weight | 193.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid (CAS 24132-22-7), molecular formula C9H7NO4 and molecular weight 193.16 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 193.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid 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 | C9H7NO4 |
| Molecular Weight | 193.16 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Oxo Standards
- 3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylic acid (CAS 134997-87-8)
- 2-Oxo-2,4-dihydro-1H-3,1-benzoxazine-6-carboxylic acid (CAS 1511528-39-4)
- 8-Oxo-6,8-dihydro-5H-pyrano[3,4-b]pyridine-6-carboxylic acid (CAS 1566279-10-4)
- 2-(2-Oxo-2,3-dihydro-1,3-benzoxazol-5-yl)acetic acid (CAS 171056-70-5)
- 3,4-Dihydro-3-oxo-2H-1,4-benzoxazine-5-carboxylic acid (CAS 483282-25-3)
- 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-7-carboxylic acid (CAS 214848-62-1)
- 3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-8-carboxylic acid (CAS 208772-72-9)
- 4,5-dihydro-4-oxo-3H-Pyrrolo[3,2-d]pyrimidine-7-carboxylic acid methyl ester 779326-74-8 (CAS 779326-74-8)
Recommended Standards
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- 1-(4-(Cyanomethyl)phenyl)-4-hydroxy-2-oxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (CAS 1956371-66-6)
- (R)-6-(pyrrolidin-2-yl)quinolin-7-ol (CAS 1213941-46-8)
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- 7-bromo-5-chloro-1H-indazole (CAS 875305-86-5)
- N-(sec-Butyl)-5-(piperidin-2-yl)pyridin-2-amine (CAS 1352529-42-0)
- Peptide Impurity 15 (CAS 1227750-69-7)
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