18-Vinyl-2,3,5,6,8,9,11,12,14,15-decahydrobenzo[b][1,4,7,10,13,16]hexaoxacyclooctadecine CAS 39557-71-6
| CAS No. | 39557-71-6 |
| Molecular Formula | C18H26O6 |
| Molecular Weight | 338.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
18-Vinyl-2,3,5,6,8,9,11,12,14,15-decahydrobenzo[b][1,4,7,10,13,16]hexaoxacyclooctadecine (CAS 39557-71-6) is a high-purity analytical reference standard with the molecular formula C18H26O6 and a molecular weight of 338.40 g/mol.
The molecular framework of 18-Vinyl-2,3,5,6,8,9,11,12,14,15-decahydrobenzo[b][1,4,7,10,13,16]hexaoxacyclooctadecine (C18H26O6) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C18H26O6 |
| Molecular Weight | 338.40 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
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- 2-Methyl-1-((1-methylpiperidin-4-yl)amino)propan-2-ol (CAS 1178384-65-0)
- N-(cyclohex-3-en-1-ylmethyl)-2-morpholinoethan-1-amine (CAS 626209-46-9)
- (2S)-2-(4-Fluoro-2-methylphenyl)piperazine dihydrochloride (CAS 334477-59-7)
- N-(2,4-Difluorophenyl)-5-pyrrolidin-2-yl-1,3,4-thiadiazole-2-carboxamide (CAS 1217862-70-8)
- Isopentylglycine (CAS 23590-18-3)
- 2-(4-Cyclohexylphenyl)imidazo[1,2-a]pyridine-6-carboxylic acid (CAS 900019-67-2)
- Peptide Impurity 24 (CAS CATO-CPTD788824)
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