5-(2-Fluorophenyl)-2-(prop-2-yn-1-ylamino)oxazol-4(5H)-one CAS 33880-98-7
| CAS No. | 33880-98-7 |
| Molecular Formula | C20H32O6 |
| Molecular Weight | 368.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(2-Fluorophenyl)-2-(prop-2-yn-1-ylamino)oxazol-4(5H)-one is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-(2-Fluorophenyl)-2-(prop-2-yn-1-ylamino)oxazol-4(5H)-one (CAS 33880-98-7), molecular formula C20H32O6 and molecular weight 368.46 g/mol, is a CATO reference standard with documented purity and traceability.
5-(2-Fluorophenyl)-2-(prop-2-yn-1-ylamino)oxazol-4(5H)-one (C20H32O6) contains a steroid core, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H32O6 |
| Molecular Weight | 368.46 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Related Fluorophenyl Standards
- 2-(2-((2-(4-Fluorophenyl)-2-oxoethyl)thio)thiazol-4-yl)-N-(2-methoxyethyl)acetamide (CAS 946199-50-4)
- 3-Benzyl-5-(4-fluorophenyl)-2-mercaptothieno[2,3-d]pyrimidin-4(3h)-one (CAS 565180-46-3)
- 4-((4-Fluorophenyl)thio)-6-(methylthio)-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 478247-58-4)
- 5-(4-Fluorophenyl)-6-methyl-3-phenyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (CAS 379239-36-8)
- N-(5-((2-((2-Fluorophenyl)amino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)-3-methylbutanamide (CAS 392298-01-0)
- (E)-1-(4-(4-fluorophenyl)piperazin-1-yl)-3-(4-propoxyphenyl)prop-2-en-1-one (CAS 329779-73-9)
- 4-Fluorophenyl 4-(trans-4-pentylcyclohexyl)benzoate (CAS 79912-98-4)
- (3-(5-(2-Fluorophenyl)-1,3,4-thiadiazol-2-yl)piperidin-1-yl)(pyridin-3-yl)methanone (CAS 1219901-79-7)
Recommended Standards
- 20-Hydroxyprostaglandine2 (CAS 57930-95-7)
- 7-((1R,2R,3R,5S)-3,5-Dihydroxy-2-((S,1E,5Z)-3-hydroxyocta-1,5-dien-1-yl)cyclopentyl)-6-oxoheptanoic acid (CAS 68324-95-8)
- 2-((4-Phenyl-5-((p-tolylamino)methyl)-4H-1,2,4-triazol-3-yl)thio)acetohydrazide (CAS 680594-42-7)
- 9Alpha,11,15s-trihydroxy-thromba-5z,13e,17z-trien-1-oicacid (CAS 71953-80-5)
- 1-(2-Chloroethyl)-4-(trifluoromethyl)benzene (CAS 85289-89-0)
- 5-Amino-4-methyl-1-(2-methylpentyl)pyridin-2(1h)-one (CAS 1512432-23-3)
- 2,4-Diiodoaniline (CAS 533-70-0)
- 3-(Prop-2-yn-1-yloxy)benzothioamide (CAS 1193389-35-3)
- 4-(2,4-Dichlorophenyl)-3-(methylsulfonyl)-1H-pyrazole (CAS 1713655-88-9)
- 4-((2-Aminoethyl)(methyl)amino)tetrahydro-2H-thiopyran 1,1-dioxide (CAS 1247181-58-3)
- 2-Fluoro-5-(dimethoxymethyl)benzonitrile (CAS 1176161-37-7)
- Ethyl 6-bromo-2-(bromomethyl)benzoate (CAS 1261851-80-2)
- N-(3-(2-oxooxazolidin-3-yl)phenyl)isobutyramide (CAS 1111528-40-5)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
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