4-Isopropyloxazol-5(4H)-one CAS 4526-83-4
| CAS No. | 4526-83-4 |
| Molecular Formula | C6H9NO2 |
| Molecular Weight | 127.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Isopropyloxazol-5(4H)-one is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Isopropyloxazol-5(4H)-one (CAS 4526-83-4) is a high-purity analytical reference standard with the molecular formula C6H9NO2 and a molecular weight of 127.14 g/mol.
The molecular framework of 4-Isopropyloxazol-5(4H)-one (C6H9NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 4-Isopropyloxazol-5(4H)-one 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 | C6H9NO2 |
| Molecular Weight | 127.14 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 Isopropyloxazol Standards
- 5-Isopropyloxazol-2-amine (CAS 33124-06-0)
- N-Isopropyloxazol-2-amine (CAS 939758-62-0)
- (2-Isopropyloxazol-4-yl)methanamine (CAS 1053059-18-9)
- (5-Isopropyloxazol-2-yl)methanamine (CAS 1133256-84-4)
- (5-Isopropyloxazol-4-yl)methanol (CAS 1210700-52-9)
- 1-(5-Isopropyloxazol-2-yl)-N-methylmethanamine (CAS 1540563-24-3)
- 1-(2-Isopropyloxazol-4-yl)-N-methylmethanamine (CAS 162739-94-8)
- (2-isopropyloxazol-5-yl)boronic acid (CAS 2408430-16-8)
Recommended Standards
- 4-Isocyanobutyric acid methyl ester (CAS 51642-06-9)
- 4-methoxy-1-methyl-2,5-dihydro-1H-pyrrol-2-one (CAS 90968-33-5)
- 4-isocyanatooxane (CAS 53035-92-0)
- 4-methylpiperidine-2,6-dione (CAS 25077-26-3)
- 3-[1-(acetamidomethyl)cyclobutyl]prop-2-ynoic acid (CAS 2680866-87-7)
- NH2-PEG5-C6-Cl (CAS 1261238-22-5)
- 3-(4-Fluorophenyl)-2-methoxypropiophenone (CAS 898767-91-4)
- 2-Fluoro-3,4-dimethylpyridine (CAS 1227570-87-7)
- ([3-(3,4-DImethylphenyl)-1-adamantyl]methyl)amine hydrochloride (CAS 136611-72-8)
- tert-Butyl (2-chloro-6-methylphenyl)carbamate (CAS 1538442-89-5)
- Di-Fmoc-S-(2-aminoethyl)-L-cysteine (CAS 1786824-21-2)
- 3-[Phenyl[(2-tetrahydropyranyl)oxy]methyl]isoxazole-4-carboxylic Acid (CAS 2006278-04-0)
- (1,1-Dioxidobenzo[d]isothiazol-3-yl)proline (CAS 869651-71-8)
- Neuroendocrine Regulatory Peptide-1 (human) (H-6622.1000) (CAS 954420-50-9)
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