Spiro[5.5]undecan-1-one CAS 1781-83-5
| CAS No. | 1781-83-5 |
| Molecular Formula | C11H18O |
| Molecular Weight | 166.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Spiro[5.5]undecan-1-one (CAS 1781-83-5), a certified reference material (molecular formula C11H18O, MW 166.26 g/mol) for analytical method development and quality control.
Spiro[5.5]undecan-1-one (C11H18O) contains a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C11H18O |
| Molecular Weight | 166.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
Related Spiro Standards
- spiro[4.6]undecan-1-one (CAS 106185-60-8)
- Spiro[5.5]undecan-2-one (CAS 1781-81-3)
- Spiro[5.5]undecan-3-one (CAS 1890-25-1)
- Spiro[3.7]undecan-1-one (CAS 41597-01-7)
- spiro[1H-pyrrolo[2,3-b]pyridine-3,1'-cyclopropane]-2-one (CAS 1416438-78-2)
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- Spiro[2.2]pentane-1-sulfonyl chloride (CAS 1492032-13-9)
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