6'-(4-Chlorophenyl)-2,4-dihydrospiro[1-benzothiopyran-3,3'-[1,5]dioxane]-4-one CAS 338755-71-8
| CAS No. | 338755-71-8 |
| Molecular Formula | C18H15ClO3S |
| Molecular Weight | 346.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 6'-(4-Chlorophenyl)-2,4-dihydrospiro[1-benzothiopyran-3,3'-[1,5]dioxane]-4-one (C18H15ClO3S) contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 346.83 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
6'-(4-Chlorophenyl)-2,4-dihydrospiro[1-benzothiopyran-3,3'-[1,5]dioxane]-4-one (CAS 338755-71-8) is a high-purity analytical reference standard with the molecular formula C18H15ClO3S and a molecular weight of 346.83 g/mol.
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 | C18H15ClO3S |
| Molecular Weight | 346.83 g/mol |
| 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 |
| Sulfur Atoms | 1 |
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