2'-(4-Chlorophenyl)-3,4-dihydro-1H-spiro[naphthalene-2,5'-[1,3]dioxan]-1-one CAS 338418-41-0
| CAS No. | 338418-41-0 |
| Molecular Formula | C19H17ClO3 |
| Molecular Weight | 328.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2'-(4-Chlorophenyl)-3,4-dihydro-1H-spiro[naphthalene-2,5'-[1,3]dioxan]-1-one (CAS 338418-41-0) is a high-purity analytical reference standard with the molecular formula C19H17ClO3 and a molecular weight of 328.79 g/mol.
Based on its molecular formula C19H17ClO3, 2'-(4-Chlorophenyl)-3,4-dihydro-1H-spiro[naphthalene-2,5'-[1,3]dioxan]-1-one contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 328.79 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C19H17ClO3 |
| Molecular Weight | 328.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 1,3-Bis(1,1-dimethylethyl) 2-(2-chloro-3-pyridinyl)imidodicarbonate (CAS 749265-07-4)
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- 2-Chloro-N-((5-oxo-1-phenylpyrrolidin-3-yl)methyl)benzamide (CAS 955219-08-6)
- (4-Benzoylpiperazin-1-yl)(3-chlorophenyl)methanone (CAS 708981-95-7)
- 3-allylquinazoline-2,4(1H,3H)-dione (CAS 10341-86-3)
- 2,3-Dioxopropanoic acid (CAS 815-53-2)
- 1-Cyclopropyl-3-ethynyl-1H-pyrazole (CAS 2624137-36-4)
- N-(5-bromo-2-methoxybenzyl)-4-fluoro-3-nitroaniline (CAS 306730-60-9)
- Safinamide Impurity 24 (CAS CATO-C4X-159024)
- 2,3,7-Trimethylindoline (CAS 41652-83-9)
- 5-Nitrobenzo[b]thiophene-2-carbaldehyde (CAS 4688-16-8)
- (2R)-4-(Methylsulfonyl)-2-morpholinemethanamine (CAS 1353897-64-9)
- 2-((2-Bromo-4-methylphenyl)amino)-N-cyclopropylacetamide (CAS 1021071-11-3)
- DAPK Substrate Peptide (CAS 386769-53-5)
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