4-Cyclopentyl-2-methyloxazol-5(4H)-one CAS 334704-98-2
| CAS No. | 334704-98-2 |
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Cyclopentyl-2-methyloxazol-5(4H)-one (C9H13NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies 4-Cyclopentyl-2-methyloxazol-5(4H)-one (CAS 334704-98-2), a certified reference material (molecular formula C9H13NO2, MW 167.21 g/mol) for analytical method development and quality control.
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.
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 | C9H13NO2 |
| Molecular Weight | 167.21 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 |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Cyclopentyl Standards
- (3-Cyclopentyl-1,2,4-oxadiazol-5-yl)methanamine (CAS 1184452-71-8)
- (1-Cyclopentyl-1H-1,2,3-triazol-4-yl)methanol (CAS 1250715-91-3)
- n-Cyclopentyl-3-methyl-1,2,4-oxadiazol-5-amine (CAS 1259064-36-2)
- (5-Cyclopentyl-1,2,4-oxadiazol-3-yl)methanamine (CAS 915925-36-9)
- 1-Cyclopentyl-3-(dimethylamino)prop-2-en-1-one (CAS 1344814-05-6)
- 4-cyclopentyl-4-methylpyrrolidin-2-one (CAS 1482144-93-3)
- (S)-Cyclopentyl(pyrrolidin-2-yl)methanone (CAS 607403-68-9)
- 1-Cyclopentyl-5-methylpyrrolidin-2-one (CAS 764718-05-0)
Recommended Standards
- 4-Cyanocyclohexanone Cyclic Ethylene Acetal (CAS 69947-09-7)
- 4H-Cyclopenta[b]quinoline (CAS 268-84-8)
- 4-aminopyrrolo[2,1-f][1,2,4]triazine-2-carbonitrile (CAS 2092113-97-6)
- 4-Hydroxy-4a,5,6,7,8,8a-hexahydroquinolin-2(1H)-one (CAS 906719-26-4)
- Ethyl 4-(2-(1,3-dioxoisoindolin-2-yl)acetamido)benzoate (CAS 7508-58-9)
- (E)-1-Methyl-3-(prop-1-en-1-yl)benzene (CAS 2077-32-9)
- tert-Butyl (1,3-dioxoisoindolin-2-yl) carbonate (CAS 15263-20-4)
- 4-[3-(1H-Pyrrol-1-yl)thiophene-2-carbonyl]morpholine (CAS 111886-71-6)
- Methyl 3-(5-((((3,4-dichlorobenzyl)oxy)imino)methyl)furan-2-yl)thiophene-2-carboxylate (CAS 241488-18-6)
- Carbetocin Impurity 4 (CAS CATO-C4X-19114)
- 2-(Methylthio)-N-(4-sulfamoylphenyl)benzamide (CAS 887202-18-8)
- N'-(Thiophen-2-ylmethylene)imidazo[1,2-a]pyridine-7-carbohydrazide (CAS 2197064-20-1)
- 2-(5-ethylpyridin-2-yl)acetaldehyde (CAS 1260759-29-2)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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