| CAS No. | 5445-55-6 |
| Molecular Formula | C18H18O2 |
| Molecular Weight | 266.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 266.33 g/mol gives trans-9,10-Dihydro-9,10-ethanoanthracene-11,12-dimethanol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies trans-9,10-Dihydro-9,10-ethanoanthracene-11,12-dimethanol (CAS 5445-55-6), a certified reference material (molecular formula C18H18O2, MW 266.33 g/mol) for analytical method development and quality control.
Owing to a steroid core, a hydroxyl group, an ether linkage, trans-9,10-Dihydro-9,10-ethanoanthracene-11,12-dimethanol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 266.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
| Molecular Formula | C18H18O2 |
| Molecular Weight | 266.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |