2-Methyloxazol-5(4H)-one CAS 24474-93-9
| CAS No. | 24474-93-9 |
| Molecular Formula | C4H5NO2 |
| Molecular Weight | 99.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 2-Methyloxazol-5(4H)-one (CAS 24474-93-9), a certified reference material (molecular formula C4H5NO2, MW 99.09 g/mol) for analytical method development and quality control.
Structurally, 2-Methyloxazol-5(4H)-one (C4H5NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 99.09 g/mol, it falls into the low-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.
Physical & Chemical Properties
| Molecular Formula | C4H5NO2 |
| Molecular Weight | 99.09 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.) | 1963 |
| Nitrogen Atoms | 1 |
Related Methyloxazol Standards
- 4-Methyloxazol-2(3H)-one (CAS 125210-03-9)
- 5-Methyloxazol-2(3H)-one (CAS 13627-02-6)
- 2-Methyloxazol-5-ol (CAS 936332-31-9)
- 4-methyloxazol-5-ol (CAS 43022-91-9)
- 5-Methyloxazol-4-amine (CAS 1194374-94-1)
- 2-Methyloxazol-4-amine (CAS 153138-00-2)
- 2-Methyloxazol-5-amine (CAS 153138-07-9)
- 4-Methyloxazol-2-amine (CAS 35629-70-0)
Recommended Standards
- 2-Methylisoxazol-3(2H)-one (CAS 26347-18-2)
- 2-cyanopropanoic Acid (CAS 632-07-5)
- 3-Aminofuran-2(5H)-one (CAS 33693-56-0)
- 2-Cyano-n'-hydroxyethanimidamide (CAS 4264-06-6)
- 2-Chloro-6-(benzylsulfanyl)-4-(trifluoromethyl)pyridine (CAS 1303889-57-7)
- 6-Phenyl-2-oxaspiro[3.3]Heptane-6-carbonitrile (CAS 1414513-75-9)
- Ethyl 2,2-dimethyl-6-oxocyclohexanecarboxylate (CAS 2979-10-4)
- (1,4-Dioxaspiro[4.4]Nonan-6-yl)methanol (CAS 23153-74-4)
- 2-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)amino)acetohydrazide (CAS 446276-13-7)
- 5-(Thiophen-2-yl)thiomorpholine-3-carboxylic acid (CAS 1467658-45-2)
- 3-(3,5-Dimethylphenyl)-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxylic acid (CAS 1370594-84-5)
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- N1-(5-Fluoro-7-(2-methoxyethoxy)quinazolin-4-yl)benzene-1,4-diamine (CAS 2248003-88-3)
- (Asp28)-Exenatide trifluoroacetate salt (CAS 1678417-24-7)
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