(Z)-2-phenyl-4-(3,4,5-trimethoxybenzylidene)oxazol-5(4H)-one CAS 944261-86-3
| CAS No. | 944261-86-3 |
| Molecular Formula | C19H17NO5 |
| Molecular Weight | 339.34 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)-2-phenyl-4-(3,4,5-trimethoxybenzylidene)oxazol-5(4H)-one (CAS 944261-86-3) is a high-purity analytical reference standard with the molecular formula C19H17NO5 and a molecular weight of 339.34 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, (Z)-2-phenyl-4-(3,4,5-trimethoxybenzylidene)oxazol-5(4H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 339.34 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.
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 | C19H17NO5 |
| Molecular Weight | 339.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (S)-3-(((9H-Fluoren-9-yl)methoxy)carbonyl)oxazolidine-4-carboxylic acid (CAS 352662-35-2)
- 1-[(9H-fluoren-9-ylmethoxy)carbonyl]-3-hydroxyazetidine-3-carboxylic acid (CAS 2044773-70-6)
- (2R,3R,4S)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate (CAS 6586-65-8)
- 2-(3,4,5-Trimethoxyphenyl)quinoline-4-carboxylic acid (CAS 302575-69-5)
- 1-[2-[2-hydroxy-3-(propylamino)propoxy]phenyl]ethanone (CAS 88308-20-7)
- (2-Bromocyclopropyl)benzene (CAS 36617-02-4)
- (R)-Ethyl 2-amino-2-phenylacetate (CAS 39251-40-6)
- 2,4-Dimethylpyrimidine-5-carbohydrazide (CAS 88317-45-7)
- 2-(4-Carbamimidoylphenyl)acetic Acid Hydrochloride (CAS 52798-09-1)
- 2-(m-Tolyl)piperidine (CAS 227768-91-4)
- Relugolix Impurity 105 (CAS CATO-C4X-2429105)
- Stigmastanol (CAS 83-45-4)
- (S)-3-Hydroxy-1-(4-methoxybenzyl)piperidine-2,6-dione (CAS 562817-53-2)
- SV40 Nuclear Transport Signal Peptide Analog (CAS 104914-40-1)
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