(E)-4-(2-Nitrophenyl)-4-oxobut-2-enoic acid CAS 80937-24-2
| CAS No. | 80937-24-2 |
| Molecular Formula | C10H7NO5 |
| Molecular Weight | 221.17 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 (E)-4-(2-Nitrophenyl)-4-oxobut-2-enoic acid (CAS 80937-24-2), a certified reference material (molecular formula C10H7NO5, MW 221.17 g/mol) for analytical method development and quality control.
(E)-4-(2-Nitrophenyl)-4-oxobut-2-enoic acid (C10H7NO5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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.
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.
Physical & Chemical Properties
| Molecular Formula | C10H7NO5 |
| Molecular Weight | 221.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
Related E Standards
- 3-(2-Nitrophenyl)imidazolidine-2,4-dione (CAS 1212059-55-6)
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- 3-(4-Nitrophenyl)imidazolidine-2,4-dione (CAS 62101-57-9)
- 4-(2-nitrophenyl)-2-oxobut-3-enoic acid (CAS 72323-79-6)
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- 4-Nitrophenyl prop-2-yn-1-yl carbonate (CAS 228111-40-8)
- (S)-3-(3-Nitrophenyl)piperazin-2-one (CAS 1228556-73-7)
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Recommended Standards
- (6-nitro-1H-indazol-1-yl)acetic acid (CAS 857801-04-8)
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- 1-(2-Methoxy-4-nitrophenyl)-1H-tetrazole (CAS 328548-64-7)
- 2-(p-Tolyl)benzo[d][1,3,2]dioxaborole (CAS 85107-38-6)
- tert-butyl (5S)-5-tert-butyl-2,2-dioxo-oxathiazolidine-3-carboxylate (CAS 2476423-26-2)
- 4-Chloro-5-methyl-5,8-dihydropteridine-6,7-dione (CAS 2718971-76-5)
- Pimavanserin Impurity 67 (CAS CATO-C4X-193867)
- (R)-3-(5-bromo-2-fluorophenyl)-2-((tert-butoxycarbonyl)amino)propanoic acid (CAS 1998552-09-2)
- 2-(Methylsulfonamido)phenylboronic Acid (CAS 756520-78-2)
- (R)-4-[(S)-3-Boc-2,2-dimethyl-4-oxazolidinyl]-2-(Boc-amino)-1-butanol (CAS 1638539-65-7)
- 3-Difluoromethanesulfonylthiophene-2-carboxylic acid (CAS 1269151-66-7)
- 2,2,2-Trifluoro-1-(piperidin-4-yl)ethan-1-ol (CAS 743402-57-5)
- Des-His(1)-Semaglutide (CAS CATO-C4X-2226216)
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