5-(P-tolyl)oxazole-2-carboxylic acid CAS 1083317-82-1
| CAS No. | 1083317-82-1 |
| Molecular Formula | C11H9NO3 |
| Molecular Weight | 203.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H9NO3, 5-(P-tolyl)oxazole-2-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
5-(P-tolyl)oxazole-2-carboxylic acid (CAS 1083317-82-1) is a high-purity analytical reference standard with the molecular formula C11H9NO3 and a molecular weight of 203.19 g/mol.
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 | C11H9NO3 |
| Molecular Weight | 203.19 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.) | 1989 |
| Nitrogen Atoms | 1 |
Related P Standards
- 5-(m-Tolyl)isoxazole-4-carboxylic acid (CAS 887408-11-9)
- 5-(M-tolyl)oxazole-4-carboxylic acid (CAS 914220-25-0)
- 5-(O-tolyl)isoxazole-4-carboxylic acid (CAS 887408-10-8)
- 5-(P-tolyl)isoxazole-4-carboxylic acid (CAS 887408-19-7)
- 1-(p-Tolyl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 1020253-51-3)
- 1-(o-Tolyl)-1H-1,2,3-triazole-5-carboxylic acid (CAS 1153905-10-2)
- 1-(o-Tolyl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 1245644-79-4)
- 1-(M-tolyl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 1245649-64-2)
Recommended Standards
- 2-(4-Methyl-3-indolyl)-2-oxoacetic Acid (CAS 1082847-53-7)
- Methyl 3-(4-cyanophenyl)oxirane-2-carboxylate (CAS 108492-59-7)
- 2-(7-Methyl-3-indolyl)-2-oxoacetic Acid (CAS 1082821-64-4)
- (2Z)-2-Cyano-3-(4-methoxyphenyl)prop-2-enoic acid (CAS 1089301-34-7)
- (2Z)-2-[(Z)-Benzoyl]-3-(4-nitrophenyl)prop-2-enenitrile (CAS 101220-38-6)
- WIKI4 (CAS 838818-26-1)
- 3-(1,3,5-Trimethyl-1h-pyrazol-4-yl)propanoic acid (CAS 956352-96-8)
- (R)-Hexahydropyrrolo[1,2-a]pyrazin-1(2H)-one (CAS 100501-54-0)
- {[2-(3-Methoxyphenyl)-1,3-thiazol-5-yl]-methyl}amine dihydrochloride (CAS 1185709-34-5)
- (2-[(1-Benzyl-2-methyl-1h-indol-3-yl)thio]ethyl)amine (CAS 1105193-48-3)
- Methyl 4-(4,5-dibromo-1H-pyrrole-2-carboxamido)butanoate (CAS 1706460-02-7)
- (S)-5-(2-hydroxyethyl)-2,2-dimethyl-1,3-dioxolan-4-one (CAS 124724-88-5)
- 2-((2,6-Dimethylpyrimidin-4-yl)amino)-1-phenylethan-1-ol (CAS 1179509-96-6)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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