5-(3-Nitrophenyl)isoxazole-3-carboxylic Acid CAS 199601-80-4
| CAS No. | 199601-80-4 |
| Molecular Formula | C10H6N2O5 |
| Molecular Weight | 234.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
5-(3-Nitrophenyl)isoxazole-3-carboxylic Acid (CAS 199601-80-4) is a high-purity analytical reference standard with the molecular formula C10H6N2O5 and a molecular weight of 234.17 g/mol.
5-(3-Nitrophenyl)isoxazole-3-carboxylic Acid (C10H6N2O5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
As a certified reference material (CRM), 5-(3-Nitrophenyl)isoxazole-3-carboxylic 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 | C10H6N2O5 |
| Molecular Weight | 234.17 g/mol |
| Appearance | Pale yellow to 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Nitrogen Atoms | 2 |
Related Nitrophenyl Standards
- 3-(3-Nitrophenyl)isoxazole-5-carboxylic acid (CAS 1022083-09-5)
- 2-(2-Nitrophenyl)oxazole-4-carboxylic acid (CAS 1220040-17-4)
- 5-(2-Nitrophenyl)isoxazole-3-carboxylic Acid (CAS 1232028-11-3)
- 1-(2-Nitrophenyl)-1H-1,2,3-triazole-5-carboxylic acid (CAS 1266982-78-8)
- 2-(4-Nitrophenyl)oxazole-4-carboxylic acid (CAS 1457898-81-5)
- 1-(4-Nitrophenyl)-1H-1,2,3-triazole-5-carboxylic acid (CAS 15966-70-8)
- 1-(3-Nitrophenyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 944905-90-2)
- 1-(4-Nitrophenyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 4600-06-0)
Recommended Standards
- 5-(2-Nitrophenyl)isoxazole-4-carboxylic acid (CAS 887408-17-5)
- 5-(3-Nitrophenyl)oxazole-4-carboxylic acid (CAS 951885-28-2)
- 5-(1h-Tetrazol-1-yl)isophthalic acid (CAS 207730-78-7)
- 5-(4-Nitrophenyl)-4H-1,2,4-triazole-3-carboxylic acid (CAS 944897-44-3)
- 3-(3-(4-Fluorophenyl)-5,9-dimethyl-7-oxo-7H-furo[3,2-g]chromen-6-yl)propanoic acid (CAS 777857-51-9)
- 2-Amino-4,7-dimethylbenzo[d]thiazol-6-ol (CAS 26278-83-1)
- 6-(Trifluoromethyl)pyridine-2,3-diamine (CAS 683242-79-7)
- N-Benzyl-6,7-dihydroxyisoquinoline-3-carboxamide (CAS 146743-91-1)
- Methyl 4,6-dihydrothieno[3,4-b]thiophene-2-carboxylate (CAS 7767-60-4)
- 9-(tert-Butyl) 3-methyl 7-oxo-9-azabicyclo[3.3.1]nonane-3,9-dicarboxylate (CAS 1523571-20-1)
- (3-Amino-4-chlorophenyl)(p-tolyl)methanone (CAS 106841-04-7)
- Benzeneethanol, α-(chloromethyl)-β-phenyl-, (αR)- (CAS 2007910-48-5)
- 7-Bromo- 1, 2, 3, 3a, 4, 8b- hexahydro- 4- (4- methylphenyl) cyclopent[b] indole (CAS 1250863-85-4)
- (D-Ala2)-Gastric Inhibitory Polypeptide (human) trifluoroacetate salt (CAS 444073-04-5)
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