Home Categories Chemical Reagents Ergosterol
A3952312

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
Update time: 2022-07-08

PRODUCT Properties

Melting point: 156-158 °C(lit.)
Boiling point: 250 °C (1.3 mmHg)
alpha  -120 º (c=1, CHC13)
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)

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
1-3-8-10
HazardClass  6.1
PackingGroup  II
HS Code  29334900

RELATED PRODUCTS