4,5-Dimethyl-2,3-dihydro-1,3-oxazol-2-one CAS 59167-68-9
| CAS No. | 59167-68-9 |
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 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.
4,5-Dimethyl-2,3-dihydro-1,3-oxazol-2-one (CAS 59167-68-9), molecular formula C5H7NO2 and molecular weight 113.11 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4,5-Dimethyl-2,3-dihydro-1,3-oxazol-2-one is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 113.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 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.) | 1973 |
| Nitrogen Atoms | 1 |
Related Dimethyl Standards
- 2,2-dimethyl-1-Oxa-8-azaspiro[4.5]decane (CAS 1065073-48-4)
- 3,4-Dimethyl-5-isoxazolol (CAS 29279-99-0)
- N,1-dimethyl-1H-1,2,3,4-tetrazol-5-amine (CAS 17267-51-5)
- 1,3-Dimethyl-1H-1,2,4-triazol-5-ol (CAS 4114-21-0)
- 3,4-dimethyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 54770-19-3)
- N,3-Dimethyl-1,2,4-oxadiazol-5-amine (CAS 81574-21-2)
- 1,4-Dimethyl-2-pyrrolidone (CAS 2555-04-6)
- 1,5-Dimethyl-6-oxa-3-azabicyclo[3.1.0]hexane (CAS 855383-57-2)
Recommended Standards
- 4,5-Dihydro-1H-pyrrole-2-carboxylic acid (CAS 872264-15-8)
- 4-Hydroxy-5,6-dihydropyridin-2(1H)-one (CAS 500102-31-8)
- 4-(Methylamino)furan-2(5H)-one (CAS 30290-18-7)
- 4-Hydroxy-5-methyl-1H-pyrrol-2(5H)-one (CAS 89323-91-1)
- (3,4-Dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)methanol (CAS 1256806-94-6)
- 4-Vinylbenzyl Bromide (stabilized with TBC) (CAS 13368-25-7)
- 3-(2-((Difluoromethyl)thio)-4,6-dimethylpyrimidin-5-yl)propanoic acid (CAS 863668-50-2)
- 7-Bromo-3-(nitromethyl)-1,2-dihydronaphthalene (CAS 1225347-00-1)
- 1-methyl-1H-1,2,3-benzotriazole-5-sulfonyl fluoride (CAS 1909337-17-2)
- Iloperidone Impurity 1 (CAS 207298-39-3)
- 3-(2-Aminoethyl)-7-methyl-4H-pyrido[2,3-e][1,2,4]thiadiazine 1,1-dioxide (CAS 1956377-67-5)
- 4-(2-Acetamidophenoxy)butanoic acid (CAS 1016689-67-0)
- 3-Isocyanatopentane (CAS 42065-78-1)
- Semaglutide (CAS 910463-68-2)
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