N-(3-Chloro-1,4-dioxo-1,4-dihydro-2-naphthalenyl)-N-(4-fluorobenzyl)acetamide CAS 866157-72-4
| CAS No. | 866157-72-4 |
| Molecular Formula | C19H13ClFNO3 |
| Molecular Weight | 357.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
N-(3-Chloro-1,4-dioxo-1,4-dihydro-2-naphthalenyl)-N-(4-fluorobenzyl)acetamide (CAS 866157-72-4), molecular formula C19H13ClFNO3 and molecular weight 357.76 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N-(3-Chloro-1,4-dioxo-1,4-dihydro-2-naphthalenyl)-N-(4-fluorobenzyl)acetamide (C19H13ClFNO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 357.76 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C19H13ClFNO3 |
| Molecular Weight | 357.76 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, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 7-(Chlorodifluoromethyl)-5-methyl-3-(phenylsulfonyl)pyrazolo[1,5-a]pyrimidine (CAS 866049-88-9)
- 1',4-Dihydroxy Midazolam (1.0mg/ml in Acetonitrile) (CAS 64740-68-7)
- Cinolazepam (CAS 75696-02-5)
- Ganciclovir Impurity 35 (CAS CATO-C4X-102135)
- (2E,4E)-3-Methyl-5-(2,6,6-trimethylcyclohex-1-en-1-yl)penta-2,4-dienenitrile (CAS 5299-98-9)
- 2-(Chloromethyl)-5-(difluoromethyl)-3-hydroxypyridine-4-carboxylic acid (CAS 1805609-04-4)
- 5,6,7,8-Tetrahydroisoquinoline-4-carbonitrile (CAS 4695-90-3)
- Tert-butyl n-[2-methyl-1-(methylamino)propan-2-yl]carbamate (CAS 134597-95-8)
- 3-(3-Fluorobenzyloxy)-bromobenzene (CAS 845866-57-1)
- 1-(tert-butyl) 4-ethyl 1H-pyrazole-1,4-dicarboxylate (CAS 405103-00-6)
- Hexafluoroisobutene (CAS 382-10-5)
- 2-(5-Chloro-2-fluorophenyl)-1,3-dioxolane (CAS 773087-57-3)
- Methyl 4-bromo-3-(3-methoxyphenyl)-1h-pyrazole-5-carboxylate (CAS 1350465-22-3)
- Semaglutide Impurity 162 (x TFA Salt) (CAS CATO-C4X-2226162)
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