(Z)-4-(4-methylbenzylidene)-2-phenyloxazol-5(4h)-one CAS 57427-79-9
| CAS No. | 57427-79-9 |
| Molecular Formula | C17H13NO2 |
| Molecular Weight | 263.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(Z)-4-(4-methylbenzylidene)-2-phenyloxazol-5(4h)-one (CAS 57427-79-9), molecular formula C17H13NO2 and molecular weight 263.29 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (Z)-4-(4-methylbenzylidene)-2-phenyloxazol-5(4h)-one (C17H13NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 263.29 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C17H13NO2 |
| Molecular Weight | 263.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
Related Z Standards
- (Z)-4-(2-methylbenzylidene)-2-phenyloxazol-5(4h)-one (CAS 53949-13-6)
- 4-(4-Methylbenzylidene)-2-phenyloxazol-5(4H)-one (CAS 82309-33-9)
- 3-(4-Methylbenzylidene)-5-phenylfuran-2(3H)-one (CAS 51460-18-5)
- 4-Methylbenzylidene Camphor (CAS 36861-47-9)
- p-Methylbenzylidene p-butylaniline (CAS 38549-81-4)
- 3-Methyl-4-(4-methylbenzylidene)-1-phenyl-1H-pyrazol-5(4H)-one (CAS 53316-56-6)
- 2-(3-Methylbenzylidene)-1H-indene-1,3(2H)-dione (CAS 15890-19-4)
- (E)-2-(2-(3-methylbenzylidene)hydrazine-1-carbonyl)benzoic acid (CAS 315248-28-3)
Recommended Standards
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