2,3:4,6-Di-o-cyclohexylidene-α-D-mannopyranose CAS 70835-78-8
| CAS No. | 70835-78-8 |
| Molecular Formula | C18H28O6 |
| Molecular Weight | 340.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,3:4,6-Di-o-cyclohexylidene-α-D-mannopyranose (CAS 70835-78-8) is a high-purity analytical reference standard with the molecular formula C18H28O6 and a molecular weight of 340.41 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, 2,3:4,6-Di-o-cyclohexylidene-α-D-mannopyranose is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 340.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C18H28O6 |
| Molecular Weight | 340.41 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
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