5-Hydroxy-3-phenylisoxazole-4-carboxylic acid CAS 15969-44-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 15969-44-5 |
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Hydroxy-3-phenylisoxazole-4-carboxylic acid (CAS 15969-44-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H9NO4. Molecular weight: 219.19 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 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, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 2-(7-Hydroxy-2-oxo-2h-chromen-4-yl)acetamide (CAS 101999-45-5)
- 4-Hydroxy-7-methoxyquinoline-6-carboxylic acid (CAS 1190837-18-3)
- N-(4-hydroxy-2-oxo-2H-chromen-3-yl)acetamide (CAS 13948-45-3)
- Methyl 4-hydroxy-1-oxo-1,2-dihydroisoquinoline-3-carboxylate (CAS 13972-97-9)
- 3-hydroxy-7-methoxyquinoline-4-carboxylic acid (CAS 1487292-95-4)
- 2-Hydroxy-8-methoxyquinoline-3-carboxylic acid (CAS 169321-92-0)
- 5-Hydroxy-2-methyl-1-oxo-1,2-dihydroisoquinoline-6-carboxylic acid (CAS 1783406-37-0)
- 2-(3-hydroxy-2-oxopropyl)-2,3-dihydro-1H-isoindole-1,3-dione (CAS 35750-04-0)
Recommended Standards
- 6-Methoxy-2-oxo-1,2-dihydroquinoline-3-carboxylicacid (CAS 154386-35-3)
- (2-Nitrophenyl)methanesulfonyl fluoride (CAS 1675732-94-1)
- 4-Methyl-3-nitrobenzenesulfonyl fluoride (CAS 1535-47-3)
- 2-Chloro-N-(1-(4-fluorophenyl)-3-methyl-1h-pyrazol-5-yl)acetamide hydrochloride (CAS 1209453-29-1)
- 4-(1,3-Dithiolan-2-yl)-2-methoxy-6-nitrophenyl 2,5-dichlorobenzenesulfonate (CAS 298216-06-5)
- 1-(2-(Bromomethyl)phenyl)-1H-imidazole (CAS 788137-99-5)
- 2-(Adamantan-1-yl)-2-aminoacetic acid (CAS 60256-21-5)
- 4,4'-Oxydipyridine (CAS 53258-96-1)
- 1-Cbz-3-bromo-4-oxopiperidine (CAS 174184-13-5)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com