1-[(3,4-Dichlorophenyl)methyl]-5-(4-methylphenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile CAS 338964-96-8
| CAS No. | 338964-96-8 |
| Molecular Formula | C20H14Cl2N2O |
| Molecular Weight | 369.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-[(3,4-Dichlorophenyl)methyl]-5-(4-methylphenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-[(3,4-Dichlorophenyl)methyl]-5-(4-methylphenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile (CAS 338964-96-8) is a high-purity analytical reference standard with the molecular formula C20H14Cl2N2O and a molecular weight of 369.24 g/mol.
Structurally, 1-[(3,4-Dichlorophenyl)methyl]-5-(4-methylphenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile (C20H14Cl2N2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 369.24 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C20H14Cl2N2O |
| Molecular Weight | 369.24 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorophenyl Standards
- 1-[(3,4-Dichlorophenyl)methoxy]-2-phenyl-1H-1,3-benzodiazole (CAS 338786-91-7)
- 3-(2,4-Dichlorophenyl)-5-((2-fluorobenzyl)thio)-4H-1,2,4-triazol-4-amine (CAS 676244-32-9)
- 3-(2,4-Dichlorophenyl)-5-((3-fluorobenzyl)thio)-4H-1,2,4-triazol-4-amine (CAS 585564-00-7)
- 3-(2,4-Dichlorophenyl)-5-((4-fluorobenzyl)thio)-4H-1,2,4-triazol-4-amine (CAS 577761-06-9)
- 3-(3,5-Dichlorophenyl)-1-(1-methylcyclohexanecarbonyl)imidazolidine-2,4-dione (CAS 90815-29-5)
- Ethyl 5-(3,4-dichlorophenyl)-2-(morpholin-4-yl)-1H-pyrrole-3-carboxylate (CAS 338406-26-1)
- 2-(3,4-Dichlorophenyl)-5-methyl-6-phenylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 691868-54-9)
- 2-(3,4-Dichlorophenyl)-5-(2-methanesulfonylphenyl)-1,3,4-oxadiazole (CAS 339014-34-5)
Recommended Standards
- 2-((2-Bromobenzo[4,5]imidazo[1,2-c]quinazolin-6-yl)thio)acetonitrile (CAS 422289-89-2)
- 1-(3-Chlorobenzyl)-4-[2-(4-chlorophenyl)acetyl]-1H-pyrrole-2-carbonitrile (CAS 478046-98-9)
- 2-(2-Chlorophenyl)-1-[(3-chlorophenyl)methoxy]-1H-1,3-benzodiazole (CAS 400086-38-6)
- 1-(2,6-Dichlorobenzyl)-2-oxo-5-(p-tolyl)-1,2-dihydropyridine-3-carbonitrile (CAS 338964-95-7)
- (3-Chlorophenyl)(cyclohexyl)methanol (CAS 522654-02-0)
- 2-Methyl-5-(4-(methylsulfonyl)phenyl)-1-(3-(trifluoromethyl)phenyl)-1H-pyrrole (CAS 338416-32-3)
- 2-Butoxy-4-chloropyridine (CAS 1346809-04-8)
- 3-(4-Ethylphenyl)butan-2-ol (CAS 1507639-09-9)
- Dehydro Nisoldipine-d7 (CAS 1329836-20-5)
- 1-(2-methylpropyl)piperidine-2-carbaldehyde (CAS 1248974-85-7)
- 4-Acetyl-N,N-diphenylbenzenesulfonamide (CAS 3938-79-2)
- (3-Butoxy-2-fluorophenyl)boronic acid (CAS 871125-94-9)
- 5-(3-(tert-Butyl)-1-(cyclopropylmethyl)ureido)-N,N-dimethyl-1,3,4-thiadiazole-2-sulfonamide (CAS 1233026-24-8)
- C-Peptide（dog） (CAS 39016-05-2)
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