Oxazole-2,5-dicarboxylic acid CAS 1449569-97-4
| CAS No. | 1449569-97-4 |
| Molecular Formula | C5H3NO5 |
| Molecular Weight | 157.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Oxazole-2,5-dicarboxylic acid is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Oxazole-2,5-dicarboxylic acid (CAS 1449569-97-4) is a high-purity analytical reference standard with the molecular formula C5H3NO5 and a molecular weight of 157.08 g/mol.
Structurally, Oxazole-2,5-dicarboxylic acid (C5H3NO5) contains a carbohydrate-derived structure, an amide group. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 157.08 g/mol, it falls into the medium-molecular-weight range. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Oxazole-2,5-dicarboxylic 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 | C5H3NO5 |
| Molecular Weight | 157.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 1 |
Related Oxazole Standards
- 2-Ethyl-oxazole-4-carboxylic acid methyl ester (CAS 1126634-42-1)
- 2-Ethyl-1,3-oxazole-4-carbonyl chloride (CAS 1858241-93-6)
- 52320-58-8 5-Ethyl-1,2-oxazole-3-carbonyl chloride DTXSID40602148 (CAS 52320-58-8)
- Oxazole-2-sulfonyl chloride (CAS 184170-50-1)
- 1,2-Oxazole-4-sulfonyl chloride (CAS 933740-94-4)
- 2-Methyl-1,3-oxazole-4-carbonyl chloride (CAS 62348-22-5)
- 914637-76-6 5-Methyl-1,3-oxazole-4-carbonyl chloride MFCD08056322 (CAS 914637-76-6)
- 2-ethyl-1,3-oxazole-5-carboxylic acid (CAS 1257266-48-0)
Recommended Standards
- 3,5-dioxo-2,3,4,5-tetrahydro-1,2,4-triazine-6-carboxylic acid (CAS 13924-15-7)
- Isoxazole-3,4-dicarboxylic acid (CAS 15440-76-3)
- 3-Nitroisoxazole-5-carboxamide (CAS 1224594-00-6)
- (4,5-Dioxo-4,5-dihydro-1H-pyrazol-3-yl)carbamic acid (CAS 859955-10-5)
- Ethyl 4-amino-2,5-dimethylthieno[2,3-d]pyrimidine-6-carboxylate (CAS 923747-62-0)
- (2Z)-2-[(Z)-4-Chlorobenzoyl]-3-[(2-methoxyethyl)amino]-3-(methylsulfanyl)prop-2-enenitrile (CAS 866151-80-6)
- 1-Acetylindolin-5-yl acetate (CAS 897940-84-0)
- 4-(2-bromophenoxy)pyridine (CAS 33399-23-4)
- 4-Amino-2-(4-methyl-piperidin-1-yl)-benzamide (CAS 878620-99-6)
- 4-(4-(Methylsulfonyl)-1,4-diazepan-1-yl)aniline (CAS 1018592-95-4)
- 3,5-Dibromo-2-chloro-6-methoxypyridine (CAS 2432849-11-9)
- 3-Iodopyrazin-2(1H)-one (CAS 1261594-59-5)
- Perylene (CAS 198-55-0)
- Cholecystokinin Octapeptide (sulfated) (H-2060.0005) (CAS 25679-23-6)
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