2-(4-Chlorophenyl)-4-(4-nitrobenzylidene)oxazol-5(4H)-one CAS 90124-89-3
| CAS No. | 90124-89-3 |
| Molecular Formula | C16H9ClN2O4 |
| Molecular Weight | 328.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 328.71 g/mol gives 2-(4-Chlorophenyl)-4-(4-nitrobenzylidene)oxazol-5(4H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-(4-Chlorophenyl)-4-(4-nitrobenzylidene)oxazol-5(4H)-one (CAS 90124-89-3), a certified reference material (molecular formula C16H9ClN2O4, MW 328.71 g/mol) for analytical method development and quality control.
2-(4-Chlorophenyl)-4-(4-nitrobenzylidene)oxazol-5(4H)-one (C16H9ClN2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C16H9ClN2O4 |
| Molecular Weight | 328.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 2-(4-Chlorophenyl)-4-(3-nitrobenzylidene)oxazol-5(4H)-one (CAS 40547-10-2)
- 1-(4-Chlorophenyl)-2,2-difluoroethyl diethyl phosphate (CAS 2108663-79-0)
- 1-(4-Chlorophenyl)-5-(1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)-1H-tetrazole (CAS 955976-83-7)
- 2-{[(4-chlorophenyl)methyl]sulfanyl}-6-(trifluoromethyl)pyridine-3-carbonitrile (CAS 478050-36-1)
- N-(2-Chlorophenyl)-5-oxo-1-(p-tolyl)-2,5-dihydro-1H-1,2,4-triazole-3-carboxamide (CAS 1000573-94-3)
- 1-(2-Chlorophenyl)-5-(4-methoxyphenyl)-1H-pyrazole-3-carboxylic acid (CAS 1330108-27-4)
- Benzyl (5-(4-chlorophenyl)oxazol-2-yl)carbamate (CAS 13575-29-6)
- (1-(4-Chlorophenyl)-1H-1,2,3-triazol-4-yl)methyl phenylcarbamate (CAS 338419-08-2)
Recommended Standards
- 2-[(7-Chloro-4-nitro-2,1,3-benzoxadiazol-5-yl)amino]ethyl butyrate (CAS 697262-42-3)
- 5-(5-Chlorofuran-2-yl)-1-(4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione (CAS 134333-71-4)
- 4-(4-Chlorobenzylidene)-2-(3-nitrophenyl)oxazol-5(4H)-one (CAS 20345-11-3)
- 2-(((2-Chloro-5-nitrophenyl)imino)methyl)-3-hydroxy-1H-inden-1-one (CAS 1023532-89-9)
- 6-(Trifluoromethyl)pyrimidine-4,5-diamine (CAS 23663-20-9)
- 2-(7-methyl-2-phenyl-1H-indol-3-yl)acetic acid (CAS 93315-77-6)
- 2-Ethyl-2-(propan-2-yl)cyclopropane-1-carboxylic acid (CAS 1247433-90-4)
- 5-fluoroindolin-7-amine dihydrochloride (CAS 2306268-35-7)
- Methyl 2-((3-(4-chlorophenyl)-4-oxo-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)butanoate (CAS 687565-29-3)
- Methyl2-methyl-8-oxo-3-phenyl-5,6,7,8-tetrahydro-1-oxa-7a-azaindacene-4-carboxylate (CAS 866393-57-9)
- 2-Bromo-5-ethynylbenzoic acid (CAS 1852474-03-3)
- 7-(2-Chloro-4,5-difluorophenyl)-7-oxoheptanoic acid (CAS 951891-52-4)
- 2-Amino-4-(benzo[d][1,3]dioxol-5-yl)-6-phenylnicotinonitrile (CAS 331981-12-5)
- D-[γ-Glu](Side Chain)-Semaglutide (CAS CATO-C4X-2226254)
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