3-(4-Isopropylphenyl)isoxazole-5-carboxylic acid CAS 901926-95-2
| CAS No. | 901926-95-2 |
| Molecular Formula | C13H13NO3 |
| Molecular Weight | 231.25 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 3-(4-Isopropylphenyl)isoxazole-5-carboxylic acid.
3-(4-Isopropylphenyl)isoxazole-5-carboxylic acid (CAS 901926-95-2), molecular formula C13H13NO3 and molecular weight 231.25 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-(4-Isopropylphenyl)isoxazole-5-carboxylic acid (C13H13NO3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C13H13NO3 |
| Molecular Weight | 231.25 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 chloroform, dichloromethane, ethyl acetate, 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.) | 1987 |
| Nitrogen Atoms | 1 |
Related Isopropylphenyl Standards
- 1-(4-Isopropylphenyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1042604-77-2)
- 5-(4-Isopropylphenyl)oxazole-2-carboxylic acid (CAS 1216227-69-8)
- 1-(3-Isopropylphenyl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 1245648-30-9)
- 5-(4-Isopropylphenyl)isoxazole-3-carboxylic Acid (CAS 33282-10-9)
- (1-(4-Isopropylphenyl)cyclohexyl)methanamine (CAS 1037132-07-2)
- 2-(4-Isopropylphenyl)-6-methyl-4,5-dihydropyridazin-3(2H)-one (CAS 1046451-53-9)
- (2-Isopropylphenyl)(5-methylfuran-2-yl)methanol (CAS 1443349-21-0)
- 5-(p-Isopropylphenyl)-1,3-cyclohexanedione (CAS 27463-47-4)
Recommended Standards
- 3-(4,6-Dimethoxypyrimidin-2-yl)aniline (CAS 387350-84-7)
- 3-(4-Methyl-2-oxoquinolin-1(2H)-yl)propanoic acid (CAS 75371-21-0)
- 3-(3-Acetyl-1h-indol-1-yl)propanoic acid (CAS 869947-44-4)
- 3-(4-Methyl-5-phenyl-1,3-oxazol-2-yl)propanoic acid (CAS 77876-78-9)
- 4-Phenyl-3-(pyridin-3-yl)-1H-pyrazol-5-amine (CAS 148611-85-2)
- 2-((6-Benzyl-5-oxo-2,5-dihydro-1,2,4-triazin-3-yl)thio)-N-(p-tolyl)acetamide (CAS 898611-91-1)
- N-4,N-4-Diallyl-2-methyl-1,4-benzenediamine (CAS 105294-44-8)
- 6-fluoro-3H-isobenzofuran-1-one (CAS 23932-84-5)
- 2-Chloro-5-fluorobenzoyl chloride 21900-51-6 5-FLUORO-2-CHLOROBENZOYL CHLORIDE AS00042 ATTERCOP-CHM AT108545 BENZOYL CHLORIDE, 2-CHLORO-5-FLUORO- (CAS 21900-51-6)
- Ethyl 3-(1-naphthoyl)-5-(pyridin-2-yl)indolizine-1-carboxylate (CAS 618070-13-6)
- 4-Butoxy-N-{2-[2-(sec-butyl)phenoxy]butyl}aniline (CAS 1040687-72-6)
- 3-(2,3-Dichlorophenoxy)propanenitrile (CAS 1016506-91-4)
- 1-Chloro-3,3-dimethylpentane (CAS 34887-09-7)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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 18665070610 / Nicole.chen@cato-chem.com