4-((2-Ethylphenyl)amino)-4-oxobut-2-enoic acid CAS 86162-56-3
| CAS No. | 86162-56-3 |
| Molecular Formula | C18H17N2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-((2-Ethylphenyl)amino)-4-oxobut-2-enoic acid (C18H17N2OC2H3O2) 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 336.39 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
4-((2-Ethylphenyl)amino)-4-oxobut-2-enoic acid (CAS 86162-56-3), molecular formula C18H17N2OC2H3O2 and molecular weight 336.39 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 4-((2-Ethylphenyl)amino)-4-oxobut-2-enoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H17N2O C2H3O2 |
| Molecular Weight | 336.39 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 2 |
Related Ethylphenyl Standards
- 100058-36-4 3-(4-Ethylphenyl)tetrahydrofuran C12H16O Y6757 (CAS 100058-36-4)
- Bis(2-ethylphenyl)phosphine oxide (CAS 1003879-42-2)
- 4-(4-Ethylphenyl)-1h-pyrazole-3-carbaldehyde (CAS 1005700-74-2)
- 3-(1-Benzyl-3-(4-ethylphenyl)-1H-pyrazol-4-yl)acrylic acid (CAS 1006443-40-8)
- N-(4-ethylphenyl)-5-oxopyrrolidine-2-carboxamide (CAS 1008480-25-8)
- (E)-3-(4-Ethylphenyl)prop-2-en-1-ol (CAS 1011301-86-2)
- N-(4-Ethylphenyl)-4-fluorobenzamide (CAS 101398-04-3)
- Sodium 2-(4-Ethylphenyl)thiazole-4-acetate (CAS 1015533-53-5)
Recommended Standards
- Tert-butyl [4,4'-bipiperidine]-1-carboxylate hydrochloride (CAS 180305-01-5)
- 2-((tert-Butoxycarbonyl)amino)-3,3-bis(3,3-difluorocyclobutyl)propanoic acid (CAS 2549045-89-6)
- 4-[(1Z)-3-Oxo-3-phenylprop-1-en-1-yl]phenyl 4-tert-butylbenzoate (CAS 331460-29-8)
- 6-Chloro-3-(chloromethyl)quinolin-2(1H)-one (CAS 1017127-45-5)
- 3-Amino-3-(5-chloro-2-methoxyphenyl)propanoic acid (CAS 412925-21-4)
- 1394306-52-5 1-(1-Methylpiperidin-4-yl)azepane MFCD22422043 (CAS 1394306-52-5)
- 4-(Bromomethyl)-3-fluoro-2-methoxypyridine (CAS 1227575-28-1)
- N-(2-methylbut-3-yn-2-yl)-4-phenyl-2-(pyridin-3-yl)pyrimidine-5-carboxamide (CAS 400079-55-2)
- Pent-2-yne-1,4-diol (CAS 927-57-1)
- Semaglutide impurity 100 (CAS CATO-C4X-2226100)
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