Ergosterol , 97% , 57-87-4
Synonym(s):
3β-Hydroxy-5,7,22-ergostatriene;5,7,22-Ergostatrien-3β-ol;Ergosterol;Provitamin D2
CAS NO.：57-87-4
Empirical Formula: C28H44O
Molecular Weight: 396.66
MDL number: MFCD00003623
EINECS: 200-352-7
| Pack Size | Price | Stock | Quantity |
| 1g | RMB60.00 | In Stock |
|
| 5G | RMB188.80 | In Stock |
|
| 25G | RMB616.80 | In Stock |
|
| 100g | RMB1732.80 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 156-158 °C(lit.) |
| alpha | -120 º (c=1, CHC13) |
| Boiling point: | 250 °C (1.3 mmHg) |
| Density | 0.9784 (rough estimate) |
| refractive index | -112.5 ° (C=1, THF) |
| storage temp. | -20°C |
| solubility | Acetone (Slightly, Heated), Chloroform (Slightly), Ethyl Acetate (Slightly, Heated) |
| pka | 14.91±0.70(Predicted) |
| form | Crystalline Powder or Crystalline Needles |
| color | White to off-white |
| optical activity | [α]20/D 120±10°, c = 1% in chloroform |
| Water Solubility | PRACTICALLY INSOLUBLE |
| Sensitive | Light Sensitive |
| Merck | 14,3659 |
| BRN | 2338604 |
| Stability: | Stable, but may be light or air sensitive. Incompatible with acids, strong oxidizing agents. |
| InChIKey | DNVPQKQSNYMLRS-APGDWVJJSA-N |
| LogP | 9.300 (est) |
| CAS DataBase Reference | 57-87-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Ergosterol(57-87-4) |
| EPA Substance Registry System | Ergosta-5,7,22-trien-3-ol, (3.beta.,22E)- (57-87-4) |
Description and Uses
Ergosterol is a membrane component and with few exceptions is restricted to eumycotic fungi (101). As a constituent of intact membranes, its abundance should reflect the amount of living fungal biomass in an environment. This membrane component has been related to biomass by a number of investigators and the values range from 1.9 to 11.5 mg ergosterol g?1 mycelium (102). These conversion factors yield very high values for fungal biomass, and seem unrealistic (102) when compared with independent measures of bacterial biomass. It is likely that the ergosterol assay detects nonliving hyphae and these measures may overestimate viable fungal biomass. Similarly, chitin is a dominant cell wall component in most fungi and has been proposed as a unique marker for total fungal biomass.
Ergosterol is a steroid alcohol that when irradiated with ultraviolet light yields calciferol (vitamin d2). irradiated ergosterol is added to milk for vitamin d fortification.
Safety
| Symbol(GHS) |   GHS06,GHS08 |
| Signal word | Danger |
| Hazard statements | H413 |
| Precautionary statements | P273 |
| Hazard Codes | T+,T,Xn |
| Risk Statements | 28-48/20/22-40-38-25-67-36/38-22-20-63 |
| Safety Statements | 28-36/37-45-26 |
| RIDADR | UN 2811 6.1/PG 2 |
| WGK Germany | 3 |
| F | 1-3-8-10 |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29334900 |
| Hazardous Substances Data | 57-87-4(Hazardous Substances Data) |
