4-(2-Bromobenzylidene)-2-(4-nitrophenyl)oxazol-5(4H)-one CAS 90124-88-2
| CAS No. | 90124-88-2 |
| Molecular Formula | C16H9BrN2O4 |
| Molecular Weight | 373.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-(2-Bromobenzylidene)-2-(4-nitrophenyl)oxazol-5(4H)-one (CAS 90124-88-2), a certified reference material (molecular formula C16H9BrN2O4, MW 373.16 g/mol) for analytical method development and quality control.
4-(2-Bromobenzylidene)-2-(4-nitrophenyl)oxazol-5(4H)-one (C16H9BrN2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H9BrN2O4 |
| Molecular Weight | 373.16 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 | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromobenzylidene Standards
- 4-((2-Bromobenzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478255-87-7)
- 4-((3-Bromobenzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478255-50-4)
- 4-((4-Bromobenzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478256-00-7)
- 3-(5-(4-Bromobenzylidene)-4-oxo-2-thioxothiazolidin-3-yl)propanoic acid (CAS 299950-16-6)
- 3-((3-Bromobenzylidene)amino)-2,5,6-trimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 333341-31-4)
- 4-((2-Bromobenzylidene)amino)-3-(2-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 577763-98-5)
- 4-((3-Bromobenzylidene)amino)-3-(2-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 676245-22-0)
- 4-((3-Bromobenzylidene)amino)-3-(4-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 577996-32-8)
Recommended Standards
- 3-Chloro-2-[(4-chlorophenyl)(1H-1,2,4-triazol-3-yl)methyl]-5-(trifluoromethyl)pyridine (CAS 338407-59-3)
- 5-(3,5-Dichlorophenyl)-1-(3-(trifluoromethyl)benzyl)-1H-tetrazole (CAS 303145-07-5)
- 2-(2,6-Dichloro-4-(trifluoromethyl)phenyl)-4-methylphthalazin-1(2H)-one (CAS 672951-12-1)
- 7-Chloro-3-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-8-methylquinolin-4(1H)-one (CAS 551930-76-8)
- H-Leu-Ala-Leu-Ala-OEt (CAS 81525-84-0)
- 4-(2-Bromoacetyl)-2-methoxybenzonitrile (CAS 945612-61-3)
- 1-(oxan-4-yl)azetidine-3-carboxylic acid (CAS 1127402-33-8)
- Tolindate (CAS 27877-51-6)
- 6-Bromo-5-fluoropyrimidin-4(3H)-one (CAS 1935541-89-1)
- 5-Hydroxy-2,3,7,8-tetrahydrobenzo[g][1,3,6,9,2]tetraoxaphosphacycloundecine 5-oxide (CAS 149300-81-2)
- 1-(4-Fluoro-2-(trifluoromethyl)phenyl)propan-1-one (CAS 239107-26-7)
- N-[2-(2,4-Dichlorophenoxy)ethyl]-4-(tetrahydro-2-furanylmethoxy)aniline (CAS 1040690-23-0)
- 5-Amino-3-fluoro-1-methylpyridin-2(1H)-one (CAS 1639114-39-8)
- (D-Tyr1,N-Me-Phe3)-Neuropeptide FF (H-4752.0001) (CAS 145274-93-7)
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