ChemSpider 2D Image | Dydrogesterone | C21H28O2


  • Molecular FormulaC21H28O2
  • Average mass312.446 Da
  • Monoisotopic mass312.208923 Da
  • ChemSpider ID8699
  • defined stereocentres - 6 of 6 defined stereocentres

More details:

Featured data source

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

(9β,10α)-Pregna-4,6-dien-3,20-dion [German] [ACD/IUPAC Name]
(9β,10α)-Pregna-4,6-diene-3,20-dione [ACD/IUPAC Name]
(9β,10α)-Prégna-4,6-diène-3,20-dione [French] [ACD/IUPAC Name]
152-62-5 [RN]

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

D01217 [DBID]
HSDB 3321 [DBID]
NSC 92336 [DBID]
NSC92336 [DBID]
Prestwick0_000671 [DBID]
Prestwick1_000671 [DBID]
SPBio_002682 [DBID]

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

Density: 1.1±0.1 g/cm3
Boiling Point: 462.8±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.1 mmHg at 25°C
Enthalpy of Vaporization: 72.4±3.0 kJ/mol
Flash Point: 172.2±25.7 °C
Index of Refraction: 1.557
Molar Refractivity: 90.9±0.4 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 3.58
ACD/LogD (pH 5.5): 3.30
ACD/BCF (pH 5.5): 190.60
ACD/KOC (pH 5.5): 1491.82
ACD/LogD (pH 7.4): 3.30
ACD/BCF (pH 7.4): 190.60
ACD/KOC (pH 7.4): 1491.82
Polar Surface Area: 34 Å2
Polarizability: 36.0±0.5 10-24cm3
Surface Tension: 42.2±5.0 dyne/cm
Molar Volume: 282.3±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) =  3.45

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  397.71  (Adapted Stein & Brown method)
    Melting Pt (deg C):  150.64  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  7.18E-007  (Modified Grain method)
    MP  (exp database):  169.5 deg C
    Subcooled liquid VP: 2.23E-005 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):  11.71
       log Kow used: 3.45 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  6.3393 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 :   4.65E-008  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.521E-008 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  3.45  (KowWin est)
  Log Kaw used:  -5.721  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.171
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.2446
   Biowin2 (Non-Linear Model)     :   0.0031
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.0395  (months      )
   Biowin4 (Primary Survey Model) :   3.0456  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3412
   Biowin6 (MITI Non-Linear Model):   0.0481
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -1.6377
 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):  0.00297 Pa (2.23E-005 mm Hg)
  Log Koa (Koawin est  ): 9.171
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00101 
       Octanol/air (Koa) model:  0.000364 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.0352 
       Mackay model           :  0.0747 
       Octanol/air (Koa) model:  0.0283 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 193.6409 E-12 cm3/molecule-sec
      Half-Life =     0.055 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     0.663 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     5.265000 E-17 cm3/molecule-sec
      Half-Life =     0.218 Days (at 7E11 mol/cm3)
      Half-Life =      5.224 Hrs
   Fraction sorbed to airborne particulates (phi): 0.0549 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  7987
      Log Koc:  3.902 

 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 = 1.958 (BCF = 90.71)
       log Kow used: 3.45 (estimated)

 Volatilization from Water:
    Henry LC:  4.65E-008 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 2.226E+004  hours   (927.4 days)
    Half-Life from Model Lake :  2.43E+005  hours   (1.012E+004 days)

 Removal In Wastewater Treatment:
    Total removal:              11.95  percent
    Total biodegradation:        0.17  percent
    Total sludge adsorption:    11.77  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       0.0278          1.06         1000       
   Water     14              1.44e+003    1000       
   Soil      84.9            2.88e+003    1000       
   Sediment  1.06            1.3e+004     0          
     Persistence Time: 1.67e+003 hr


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