ChemSpider 2D Image | (3beta)-20-Methylcholest-5-en-3-ol | C28H48O

(3β)-20-Methylcholest-5-en-3-ol

  • Molecular FormulaC28H48O
  • Average mass400.680 Da
  • Monoisotopic mass400.370514 Da
  • ChemSpider ID166297

  • defined stereocentres - 7 of 7 defined stereocentres

More details:

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

(3β)-20-Methylcholest-5-en-3-ol [ACD/IUPAC Name]
(3β)-20-Methylcholest-5-en-3-ol [German] [ACD/IUPAC Name]
(3β)-20-Méthylcholest-5-én-3-ol [French] [ACD/IUPAC Name]
Cholest-5-en-3-ol, 20-methyl-, (3β)- [ACD/Index Name]
20-methylcholesterol
58958-29-5 [RN]

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

Density: 1.0±0.1 g/cm3
Boiling Point: 488.7±14.0 °C at 760 mmHg
Vapour Pressure: 0.0±2.8 mmHg at 25°C
Enthalpy of Vaporization: 87.0±6.0 kJ/mol
Flash Point: 214.1±12.4 °C
Index of Refraction: 1.524
Molar Refractivity: 124.6±0.4 cm3
#H bond acceptors: 1
#H bond donors: 1
#Freely Rotating Bonds: 5
#Rule of 5 Violations: 1
ACD/LogP: 10.20
ACD/LogD (pH 5.5): 8.64
ACD/BCF (pH 5.5): 1000000.00
ACD/KOC (pH 5.5): 1188466.50
ACD/LogD (pH 7.4): 8.64
ACD/BCF (pH 7.4): 1000000.00
ACD/KOC (pH 7.4): 1188466.50
Polar Surface Area: 20 Å2
Polarizability: 49.4±0.5 10-24cm3
Surface Tension: 38.0±5.0 dyne/cm
Molar Volume: 407.4±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) =  9.19

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  439.77  (Adapted Stein & Brown method)
    Melting Pt (deg C):  171.08  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  3.8E-010  (Modified Grain method)
    Subcooled liquid VP: 1.23E-008 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):  0.0001386
       log Kow used: 9.19 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  0.0015943 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.22E-004  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.445E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  9.19  (KowWin est)
  Log Kaw used:  -2.042  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  11.232
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.1637
   Biowin2 (Non-Linear Model)     :   0.0012
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   1.8373  (months      )
   Biowin4 (Primary Survey Model) :   2.9388  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2103
   Biowin6 (MITI Non-Linear Model):   0.0139
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -1.4355
 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):  1.64E-006 Pa (1.23E-008 mm Hg)
  Log Koa (Koawin est  ): 11.232
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.83 
       Octanol/air (Koa) model:  0.0419 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.985 
       Mackay model           :  0.993 
       Octanol/air (Koa) model:  0.77 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 126.5412 E-12 cm3/molecule-sec
      Half-Life =     0.085 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.014 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): 0.989 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  2.105E+006
      Log Koc:  6.323 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 1.807 (BCF = 64.09)
       log Kow used: 9.19 (estimated)

 Volatilization from Water:
    Henry LC:  0.000222 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      7.322  hours
    Half-Life from Model Lake :      247.7  hours   (10.32 days)

 Removal In Wastewater Treatment:
    Total removal:              94.03  percent
    Total biodegradation:        0.78  percent
    Total sludge adsorption:    93.26  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       0.0124          1.31         1000       
   Water     1.38            1.44e+003    1000       
   Soil      30.5            2.88e+003    1000       
   Sediment  68.1            1.3e+004     0          
     Persistence Time: 4.76e+003 hr

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