ChemSpider 2D Image | (24S,25)-epoxycholesterol | C27H44O2

(24S,25)-epoxycholesterol

  • Molecular FormulaC27H44O2
  • Average mass400.637 Da
  • Monoisotopic mass400.334137 Da
  • ChemSpider ID2497520

  • defined stereocentres - 9 of 9 defined stereocentres

More details:

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

(24S,25)-epoxycholesterol
(3β,24S)-24,25-epoxy-cholest-5-en-3-ol
(3β,24S)-24,25-Epoxycholest-5-en-3-ol [German] [ACD/IUPAC Name]
(3β,24S)-24,25-Epoxycholest-5-en-3-ol [ACD/IUPAC Name]
(3β,24S)-24,25-Époxycholest-5-én-3-ol [French] [ACD/IUPAC Name]
24(S), 25-epoxycholesterol
24(S),25-epoxy Cholesterol
24(S),25-epoxycholesterol
77058-74-3 [RN]
Cholest-5-en-3-ol, 24,25-epoxy-, (3β,24S)- [ACD/Index Name]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

C15632 [DBID]
LMST01010012 [DBID]
  • Miscellaneous

    • Chemical Class:

      A 3<stereo>beta</stereo>-hydroxy-<greek>Delta</greek><smallsup>5</smallsup>-steroid that is desmosterol in which the double bond at position 24-25 has been oxidised to the corresponding epoxide (the 2 4<stereo>S</stereo> diastereoisomer). It is an oxysterol agonist of the liver X receptor. ChEBI CHEBI:41633
      A 3beta-hydroxy-Delta5-steroid that is desmosterol in which the double bond at position 24-25 has been oxidised to the corresponding epoxide (the 2; 4S diastereoisomer). It is an oxysterol agonist of the liver X receptor. ChEBI https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:41633

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

Density: 1.1±0.1 g/cm3
Boiling Point: 496.4±18.0 °C at 760 mmHg
Vapour Pressure: 0.0±2.9 mmHg at 25°C
Enthalpy of Vaporization: 88.0±6.0 kJ/mol
Flash Point: 201.2±15.5 °C
Index of Refraction: 1.544
Molar Refractivity: 119.7±0.4 cm3
#H bond acceptors: 2
#H bond donors: 1
#Freely Rotating Bonds: 4
#Rule of 5 Violations: 1
ACD/LogP: 7.34
ACD/LogD (pH 5.5): 6.66
ACD/BCF (pH 5.5): 67868.15
ACD/KOC (pH 5.5): 100020.09
ACD/LogD (pH 7.4): 6.66
ACD/BCF (pH 7.4): 67868.15
ACD/KOC (pH 7.4): 100020.09
Polar Surface Area: 33 Å2
Polarizability: 47.4±0.5 10-24cm3
Surface Tension: 41.2±5.0 dyne/cm
Molar Volume: 379.1±5.0 cm3

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™ 

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  7.26

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  446.98  (Adapted Stein & Brown method)
    Melting Pt (deg C):  184.54  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.62E-010  (Modified Grain method)
    Subcooled liquid VP: 7.49E-009 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  0.006213
       log Kow used: 7.26 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  0.064103 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Epoxides

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.06E-007  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.375E-008 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  7.26  (KowWin est)
  Log Kaw used:  -5.075  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.335
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :  -0.1836
   Biowin2 (Non-Linear Model)     :   0.0000
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   1.8287  (months      )
   Biowin4 (Primary Survey Model) :   2.9291  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.1745
   Biowin6 (MITI Non-Linear Model):   0.0071
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -1.5998
 Ready Biodegradability Prediction:   NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  9.99E-007 Pa (7.49E-009 mm Hg)
  Log Koa (Koawin est  ): 12.335
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3 
       Octanol/air (Koa) model:  0.531 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.991 
       Mackay model           :  0.996 
       Octanol/air (Koa) model:  0.977 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 127.1461 E-12 cm3/molecule-sec
      Half-Life =     0.084 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.009 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     7.393750 E-17 cm3/molecule-sec
      Half-Life =     0.155 Days (at 7E11 mol/cm3)
      Half-Life =      3.720 Hrs
   Fraction sorbed to airborne particulates (phi): 0.993 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  1.251E+005
      Log Koc:  5.097 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Ka (acid-catalyzed) at 25 deg C :  1.197E+000  L/mol-sec
  Ka Half-Life at pH 7:      67.037  days   

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 4.456 (BCF = 2.857e+004)
       log Kow used: 7.26 (estimated)

 Volatilization from Water:
    Henry LC:  2.06E-007 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:       5691  hours   (237.1 days)
    Half-Life from Model Lake : 6.225E+004  hours   (2594 days)

 Removal In Wastewater Treatment:
    Total removal:              93.93  percent
    Total biodegradation:        0.78  percent
    Total sludge adsorption:    93.15  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.0125          1.31         1000       
   Water     1.48            1.44e+003    1000       
   Soil      30.9            2.88e+003    1000       
   Sediment  67.6            1.3e+004     0          
     Persistence Time: 4.69e+003 hr

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