2-Chlorooxazole-4-carboxylic Acid CAS 706789-07-3
| CAS No. | 706789-07-3 |
| Molecular Formula | C4H2ClNO3 |
| Molecular Weight | 147.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chlorooxazole-4-carboxylic Acid (CAS 706789-07-3), molecular formula C4H2ClNO3 and molecular weight 147.52 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Chlorooxazole-4-carboxylic Acid (C4H2ClNO3) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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), 2-Chlorooxazole-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 | C4H2ClNO3 |
| Molecular Weight | 147.52 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorooxazole Standards
- 5-Chlorooxazole-4-carboxylic acid (CAS 1240601-37-9)
- 2-Chlorooxazole-5-carboxylic acid (CAS 1555623-55-6)
- 2-Chlorooxazole-4-carboxamide (CAS 1025468-33-0)
- Methyl 2-chlorooxazole-4-carboxylate (CAS 934236-35-8)
- Methyl 2-Chlorooxazole-5-carboxylate (CAS 934236-41-6)
- 2-Chlorooxazole-4-carbaldehyde (CAS 1060816-36-5)
- 2-Chlorooxazole-4-carbonitrile (CAS 1240598-38-2)
- Ethyl 5-chlorooxazole-4-carboxylate (CAS 1823403-24-2)
Recommended Standards
- 2-Chloro-4-nitroimidazole (CAS 57531-37-0)
- 2-Oxo-2,3-dihydrooxazole-5-carbonyl chloride (CAS 64843-26-1)
- 3-Chloro-4-nitropyrazole (CAS 35852-75-6)
- 3-Chloro-5-nitro-1H-pyrazole (CAS 1369959-12-5)
- 6’-Bromo-2’-hydroxyacetophenone (CAS 55736-69-1)
- 4-[4-(3-Methoxypropyl)-5-methyl-4H-1,2,4-triazol-3-yl]-1-phenyl-1H-pyrazol-5-amine (CAS 956763-70-5)
- N-[2-(3-Bromophenyl)ethyl]-N-methylamine (CAS 785032-26-0)
- tert-Butyl 4-(4-{[(2-Hydroxy-1,1-dimethylethyl)amino]carbonyl}-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (CAS 1221278-48-3)
- Neurotensin (1-6) (CAS 87620-09-5)
- 5-(2-Methanesulfinylphenyl)-3-(4-nitrophenyl)-1,2,4-oxadiazole (CAS 339015-74-6)
- N-Methyl-2-{2-[(piperidin-4-yl)methyl]phenyl}ethylamine Dihydrochloride (CAS 1172569-99-1)
- Cyclazosin hydrochloride (CAS 146929-33-1)
- 9a-(4-Chlorophenyl)-octahydro-1H-pyrrolo[1,2-a][1,3]diazepin-7-one (CAS 1148027-30-8)
- Peptide Impurity 04 (CAS 2913424-91-4)
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