2-{[(4-acetylphenyl)amino]methylidene}-5-phenylcyclohexane-1,3-dione CAS 1024250-49-4
| CAS No. | 1024250-49-4 |
| Molecular Formula | C21H19NO3 |
| Molecular Weight | 333.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-{[(4-acetylphenyl)amino]methylidene}-5-phenylcyclohexane-1,3-dione (C21H19NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
2-{[(4-acetylphenyl)amino]methylidene}-5-phenylcyclohexane-1,3-dione (CAS 1024250-49-4) is a high-purity analytical reference standard with the molecular formula C21H19NO3 and a molecular weight of 333.38 g/mol.
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), 2-{[(4-acetylphenyl)amino]methylidene}-5-phenylcyclohexane-1,3-dione 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 | C21H19NO3 |
| Molecular Weight | 333.38 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
Related acetylphenyl Standards
- 4-({[(4-acetylphenyl)sulfonyl]amino}methyl)benzoic acid (CAS 794559-16-3)
- Ethyl 1-(4-acetylphenyl)-3-phenyl-1H-pyrazole-4-carboxylate (CAS 853356-12-4)
- N-((3-acetylphenyl)carbamoyl)-4-methylbenzenesulfonamide (CAS 404905-33-5)
- N-(3-acetylphenyl)-2-(4-chloro-2-methylphenoxy)propanamide (CAS 13791-88-3)
- N-(4-acetylphenyl)-2-(4-chloro-2-methylphenoxy)propanamide (CAS 14157-43-8)
- N-(3-acetylphenyl)-4-(tert-butyl)benzenesulfonamide (CAS 338966-24-8)
- N-(4-Acetylphenyl)-2-((2-methylquinazolin-4-yl)oxy)acetamide (CAS 1110979-51-5)
- N-(3-Acetylphenyl)-2,2,3,3,4,4,4-heptafluorobutanamide (CAS 333396-89-7)
Recommended Standards
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- 3-((3-Fluorobenzyl)thio)-5-(3-methoxy-1-methyl-1H-pyrazol-4-yl)-4-methyl-4H-1,2,4-triazole (CAS 1014072-53-7)
- Sinococuline, >98% (CAS 109351-36-2)
- N'-(6-Methyl-2-phenylquinolin-4-yl)isonicotinohydrazide (CAS 159586-80-8)
- N-Benzyl-N-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-amine (CAS 2096342-22-0)
- Ganoderenic acid E (CAS 110241-23-1)
- 2,5-Dibromoterephthalaldehyde (CAS 63525-48-4)
- 1,2,4,5-Benzenetetracarboxylic acid, 1,4-bis[2-[(2-methyl-1-oxo-2-propen-1-yl)oxy]ethyl] ester (CAS 83418-60-4)
- tert-Butyl methyl(3-piperidinylmethyl)carbamate hydrochloride (CAS 1255717-45-3)
- N-(cyclopropylmethyl)-4-(difluoromethoxy)aniline (CAS 1156168-85-2)
- 9,9-Bis(2-ethylhexyl)-2,7-di(prop-1-yn-1-yl)-9H-fluorene (CAS 278176-13-9)
- 3-Chloro-1-methyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 161038-60-4)
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
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