5-Ethyl-4,5-dihydrooxazole-4-carboxylic acid CAS 141422-64-2
| CAS No. | 141422-64-2 |
| Molecular Formula | C6H9NO3 |
| Molecular Weight | 143.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 143.14 g/mol gives 5-Ethyl-4,5-dihydrooxazole-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Ethyl-4,5-dihydrooxazole-4-carboxylic acid (CAS 141422-64-2) is a high-purity analytical reference standard with the molecular formula C6H9NO3 and a molecular weight of 143.14 g/mol.
The molecular framework of 5-Ethyl-4,5-dihydrooxazole-4-carboxylic acid (C6H9NO3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Ethyl-4,5-dihydrooxazole-4-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 | C6H9NO3 |
| Molecular Weight | 143.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 2-Oxo-2,3-dihydrooxazole-5-carbonyl chloride (CAS 64843-26-1)
- 2-Methyl-4,5-dihydrooxazole-4-carboxylic acid (CAS 114482-46-1)
- 2-Oxo-2,3-dihydrooxazole-5-carboxylic acid (CAS 1407858-88-1)
- 2-butyl-4,5-dihydrooxazole 27031-10-3 (CAS 27031-10-3)
- (2-Phenyl-4,5-dihydrooxazole-4,4-diyl)dimethanol (CAS 62203-32-1)
- 4,5-Dihydrooxazole Bilastine (CAS 202189-77-3)
Recommended Standards
- 5-(Aminomethyl)-4,5-dihydroisoxazole-3-carboxamide (CAS 138741-87-4)
- (R)-5-oxopiperidine-2-carboxylic acid (CAS 1414960-63-6)
- (2-(Methoxymethyl)oxazol-4-yl)methanol (CAS 1381778-98-8)
- Methyl 5-methyl-4,5-dihydrooxazole-2-carboxylate (CAS 1417637-91-2)
- rel-(3S,4S)-4-Amino-1-(tert-butoxycarbonyl)piperidine-3-carboxylic acid (CAS 1903825-08-0)
- 3,6-Dibromophenanthrene-9,10-diol (CAS 952054-63-6)
- 4-Methyl-N-(2-nitrophenyl)benzenesulfonamide (CAS 6380-13-8)
- 5-(4,5-Dibromothiophen-2-yl)-4-methyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 828274-97-1)
- 2-[3-(3-chlorophenyl)-1,2,4-oxadiazol-5-yl]ethan-1-amine hydrochloride (CAS 1306605-82-2)
- 2-Phenylquinoline-5,8-dione (CAS 146830-22-0)
- 2-Chloro-N-(3,5-dimethylisoxazol-4-yl)acetamide (CAS 23891-86-3)
- Liothyronine Sodium (CAS 55-06-1)
- (S)-4-bromo-2-((tert-butoxycarbonyl)amino)butanoic acid (CAS 1217639-81-0)
- Palmitoyl Pentapeptide-4 (CAS 214047-00-4)
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