1-Phenyl-3-(pyridin-4-ylmethylene)indolin-2-one CAS 33546-08-6
| CAS No. | 33546-08-6 |
| Molecular Formula | C20H14N2O |
| Molecular Weight | 298.34 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 1-Phenyl-3-(pyridin-4-ylmethylene)indolin-2-one (CAS 33546-08-6), a certified reference material (molecular formula C20H14N2O, MW 298.34 g/mol) for analytical method development and quality control.
Based on its molecular formula C20H14N2O, 1-Phenyl-3-(pyridin-4-ylmethylene)indolin-2-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 298.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C20H14N2O |
| Molecular Weight | 298.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 2 |
Related Phenyl Standards
- 3-[(pyridin-4-ylmethyl)sulfamoyl]thiophene-2-carboxylic acid (CAS 944894-25-1)
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- N-(2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)ethyl)thiophene-2-carboxamide (CAS 1448071-70-2)
- 2-[3-(pyridin-2-ylsulfanyl)propyl]-2,3-dihydro-1H-isoindole-1,3-dione (CAS 443120-58-9)
- N-(pyridin-3-ylmethyl)naphthalene-2-sulfonamide (CAS 313276-22-1)
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Recommended Standards
- 1-Benzyl-4-(5-nitropyridin-2-yl)piperazine (CAS 381706-35-0)
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- 1-Benzyl-4-(3-nitropyridin-2-yl)piperazine (CAS 499771-07-2)
- 2-([1,1'-Biphenyl]-4-yl)imidazo[1,2-a]pyridine-3-carbaldehyde (CAS 817172-53-5)
- (2-Methoxy-4-(trimethylsilyl)phenyl)boronic acid (CAS 1374792-92-3)
- 4-(tert-Butyl)indoline (CAS 1782417-56-4)
- 3,3-difluoro-5-(iodomethyl)oxolan-2-one (CAS 1256080-97-3)
- 1-[(5-ethyl-1,2,4-oxadiazol-3-yl)methyl]-N-methylpiperidin-3-amine (CAS 1249225-78-2)
- 2-(benzylamino)-2-cyclobutylethan-1-ol (CAS 1538460-59-1)
- [S(R)]-N-[(R)-3,5-Bis(trifluoromethyl)phenyl][2-(dicyclohexylphosphanyl)phenyl]-N,2-dimethyl-2-propanesulfinamide (CAS 2565792-86-9)
- Diethyl 2-Ethyl-2-methylmalonate-d (CAS 848565-90-2)
- 1H-pyrazol-3-amine, 4-[(1,1-dimethylethyl)sulfonyl]- (CAS 1036033-16-5)
- 4-Bromo-α,α,α-trifluorotoluene-d4 (CAS 1219799-09-3)
- Semaglutide-d8 Tetratrifluoroacetate (CAS CATO-C4X-222617)
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