Oxazol-4(5H)-one CAS 6542-34-3
| CAS No. | 6542-34-3 |
| Molecular Formula | C3H3NO2 |
| Molecular Weight | 85.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Oxazol-4(5H)-one.
CATO supplies Oxazol-4(5H)-one (CAS 6542-34-3), a certified reference material (molecular formula C3H3NO2, MW 85.06 g/mol) for analytical method development and quality control.
Based on its molecular formula C3H3NO2, Oxazol-4(5H)-one 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 85.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C3H3NO2 |
| Molecular Weight | 85.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Oxazol Standards
- Oxazol-2(5H)-one (CAS 64121-01-3)
- Oxazol-5(4H)-one (CAS 497-24-5)
- Oxazol-2-ylamine 2-Aminoxazole 2-Aminooxazole 2-Oxazolamine 4570-45-0 (CAS 4570-45-0)
- Oxazol-2-ylmethanamine (CAS 885331-17-9)
- Oxazol-4-ylmethanamine (CAS 55242-82-5)
- 3-Methyl-1,2-oxazol-5-ol (CAS 45469-93-0)
- 2-(1,3-Oxazol-4-yl)acetonitrile (CAS 1065073-51-9)
- 2-(1,2-Oxazol-3-yl)acetonitrile (CAS 55242-83-6)
Recommended Standards
- Isoxazol-5-ol (CAS 82357-80-0)
- Famotidine impurity 76 (CAS CATO-C4X-139276)
- Isoxazol-5(2H)-one (CAS 43228-53-1)
- Chlorhexidine Impurity 21 (CAS 2208-89-1)
- 5-(Phenylmethoxy)-1,3-dioxan-2-one (CAS 86629-66-5)
- Boc-(+/-)-trans-4-(2-methoxyphenyl)pyrrolidine-3-carboxylic acid (CAS 1217689-78-5)
- 3-Bromo-4,6-difluoropyrazolo[1,5-a]pyridine (CAS 1427501-65-2)
- (R)-2-(3-bromo-5-methoxyphenyl)piperidine (CAS 1388718-90-8)
- 5-Fluoro-2-methyl-6-(perfluoroethyl)pyrimidin-4(3H)-one (CAS 1548-79-4)
- 3-(tert-Butyl)naphthalen-2-ol (CAS 54646-67-2)
- 3-Bromo-5-chloro-4-nitropyridine (CAS 1335057-82-3)
- 2-((4-Chlorophenyl)thio)-5-fluoropyrimidine (CAS 1353980-68-3)
- Propane-1,2,3-triyl tris(3-oxooctanoate) (CAS 68444-14-4)
- 30003-72-6 insulin chain b oxidized (CAS 30003-72-6)
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