Description of Stigmasterol
Stigmasterol is one of a group of plant sterols, or phytosterols, that include β-sitosterol, campesterol, ergosterol (provitamin D2), brassicasterol, delta-7-stigmasterol and delta-7-avenasterol, that are chemically similar to animal cholesterol. Phytosterols are insoluble in water but soluble in most organic solvents and contain one alcohol functional group.
| Items | Specifications | Results |
| Appearance | white powder | white powder |
| Identification | Infared Absorption | Complies |
| The retention time of the major peak
in the chromatogram of the Assay prepration corresponds to that in the chromatogram of the standard preparation, as obtained in the assay |
complies | |
| Specific rotation | Between -28.6°and -35.0°, measured at 20° | -32.8° |
| Water | not more than 0.5% | 0.12% |
| residue on ignition | not more than 0.2% | 0.11% |
| Heavy metals | not more than 0.001% | complies |
