ChemSpider 2D Image | 3-Hydroxypregn-16-en-20-one | C21H32O2

3-Hydroxypregn-16-en-20-one

  • Molecular FormulaC21H32O2
  • Average mass316.478 Da
  • Monoisotopic mass316.240234 Da
  • ChemSpider ID467862

More details:

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

3-Hydroxypregn-16-en-20-on [German] [ACD/IUPAC Name]
3-Hydroxypregn-16-en-20-one [ACD/IUPAC Name]
3-Hydroxyprégn-16-én-20-one [French] [ACD/IUPAC Name]
Pregn-16-en-20-one, 3-hydroxy- [ACD/Index Name]
16(5α)-Pregnen-3β-ol-20-one
16(5α)-PREGNEN-3β-OL-20-ONE
16-Allopregnen-3β-ol-20-one
16-Allopregnene-3-ol-20-one
16-Pregnenolone
16-Pregnenolone, 5,6-dihydro-
More...

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Density: 1.1±0.1 g/cm3
Boiling Point: 443.7±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±2.4 mmHg at 25°C
Enthalpy of Vaporization: 80.9±6.0 kJ/mol
Flash Point: 189.1±21.3 °C
Index of Refraction: 1.540
Molar Refractivity: 92.2±0.3 cm3
#H bond acceptors: 2
#H bond donors: 1
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 4.67
ACD/LogD (pH 5.5): 4.22
ACD/BCF (pH 5.5): 956.26
ACD/KOC (pH 5.5): 4732.58
ACD/LogD (pH 7.4): 4.22
ACD/BCF (pH 7.4): 956.26
ACD/KOC (pH 7.4): 4732.58
Polar Surface Area: 37 Å2
Polarizability: 36.5±0.5 10-24cm3
Surface Tension: 40.7±3.0 dyne/cm
Molar Volume: 293.7±3.0 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) =  4.18

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  399.80  (Adapted Stein & Brown method)
    Melting Pt (deg C):  149.13  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.03E-008  (Modified Grain method)
    Subcooled liquid VP: 1.88E-007 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):  8.598
       log Kow used: 4.18 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  7.7838 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Vinyl/Allyl Ketones

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   6.22E-009  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  4.989E-010 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  4.18  (KowWin est)
  Log Kaw used:  -6.595  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  10.775
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.3946
   Biowin2 (Non-Linear Model)     :   0.0138
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.2130  (months      )
   Biowin4 (Primary Survey Model) :   3.1915  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4122
   Biowin6 (MITI Non-Linear Model):   0.0664
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -1.1666
 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):  2.51E-005 Pa (1.88E-007 mm Hg)
  Log Koa (Koawin est  ): 10.775
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.12 
       Octanol/air (Koa) model:  0.0146 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.812 
       Mackay model           :  0.905 
       Octanol/air (Koa) model:  0.539 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 112.8264 E-12 cm3/molecule-sec
      Half-Life =     0.095 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.138 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     3.071250 E-17 cm3/molecule-sec
      Half-Life =     0.373 Days (at 7E11 mol/cm3)
      Half-Life =      8.955 Hrs
   Fraction sorbed to airborne particulates (phi): 0.859 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  4273
      Log Koc:  3.631 

 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 = 2.517 (BCF = 328.8)
       log Kow used: 4.18 (estimated)

 Volatilization from Water:
    Henry LC:  6.22E-009 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.675E+005  hours   (6977 days)
    Half-Life from Model Lake : 1.827E+006  hours   (7.612E+004 days)

 Removal In Wastewater Treatment:
    Total removal:              38.89  percent
    Total biodegradation:        0.39  percent
    Total sludge adsorption:    38.50  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       0.0358          1.81         1000       
   Water     11.7            1.44e+003    1000       
   Soil      82.9            2.88e+003    1000       
   Sediment  5.41            1.3e+004     0          
     Persistence Time: 1.94e+003 hr

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