Ethyl 5-(4-Aminophenyl)oxazole-4-carboxylate CAS 950603-70-0
| CAS No. | 950603-70-0 |
| Molecular Formula | C12H12N2O3 |
| Molecular Weight | 232.24 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.
Ethyl 5-(4-Aminophenyl)oxazole-4-carboxylate (CAS 950603-70-0) is a high-purity analytical reference standard with the molecular formula C12H12N2O3 and a molecular weight of 232.24 g/mol.
Based on its molecular formula C12H12N2O3, Ethyl 5-(4-Aminophenyl)oxazole-4-carboxylate 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 232.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C12H12N2O3 |
| Molecular Weight | 232.24 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 DMSO, DMF, methanol |
| 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 | 2 |
Related Ethyl Standards
- 1-(3-Aminophenyl)-5-ethyl-1h-1,2,3-triazole-4-carboxylic acid (CAS 1147675-34-0)
- Ethyl 3-(3-aminophenyl)-1H-1,2,4-triazole-5-carboxylate (CAS 1416340-86-7)
- Ethyl 2-(2-aminophenyl)oxazole-4-carboxylate (CAS 885274-55-5)
- Ethyl 2-(3-aminophenyl)oxazole-4-carboxylate (CAS 885274-73-7)
- Ethyl 2-(4-aminophenyl)oxazole-4-carboxylate (CAS 391248-21-8)
- Ethyl 3-(4-aminophenyl)isoxazole-5-carboxylate (CAS 951626-03-2)
- Ethyl 5-(3-aminophenyl)isoxazole-3-carboxylate (CAS 745078-84-6)
- Ethyl 5-(4-aminophenyl)isoxazole-3-carboxylate (CAS 908802-68-6)
Recommended Standards
- Ethyl 5-(phenylamino)-1H-1,2,3-triazole-4-carboxylate (CAS 62469-98-1)
- Ethyl 5-amino-1-(pyridin-2-yl)-1H-pyrazole-3-carboxylate (CAS 364728-05-2)
- Ethyl 4-hydroxy-5-phenyl-1H-pyrazole-3-carboxylate (CAS 34035-06-8)
- Ethyl 5-amino-1-(pyridin-2-yl)-1h-pyrazole-4-carboxylate (CAS 69722-29-8)
- 6-Bromopyridine-2(1H)-thione (CAS 856013-03-1)
- 1-Isobutyl-1h-pyrazole-3-sulfonyl chloride (CAS 1354706-16-3)
- N-(Cyanomethyl)-2-fluoro-N-methylbenzamide (CAS 205309-71-3)
- 3-Bromo-1H-pyrazolo[3,4-d]pyrimidine-4,6-diamine (CAS 144750-82-3)
- n',n'-bis(cyclopropylmethyl)(tert-butoxy)carbohydrazide (CAS 905929-92-2)
- (1R,2R,3aS,4S,6R,7aS)-6-Chloro-1-(2-chloroacetyl)-4-(5-hydroxy-2-methylphenethyl)-2,7a-dimethyl-5-ox (CAS 205808-74-8)
- 3-(4-(tert-Butyl)phenyl)-5-(3,4-dimethoxyphenyl)-1H-1,2,4-triazole (CAS 1279217-34-3)
- 3-Amino-5-((3-carboxy-4-hydroxyphenyl)(3-carboxy-4-oxocyclohexa-2,5-dien-1-ylidene)methyl)-2-hydroxybenzoic acid (CAS 857024-60-3)
- N,4-Dimethyl-N-(3-(2-oxooxazolidin-3-yl)propyl)benzenesulfonamide (CAS 13621-75-5)
- D-Ile27-Tirzepatide (CAS CATO-CPTD788907)
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