ChemSpider 2D Image | 11-Dehydrodexamethasone | C22H27FO5

11-Dehydrodexamethasone

  • Molecular FormulaC22H27FO5
  • Average mass390.445 Da
  • Monoisotopic mass390.184265 Da
  • ChemSpider ID8198858

  • defined stereocentres - 7 of 7 defined stereocentres

More details:

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

(16α)-9-Fluor-17,21-dihydroxy-16-methylpregna-1,4-dien-3,11,20-trion [German] [ACD/IUPAC Name]
(16α)-9-Fluoro-17,21-dihydroxy-16-methylpregna-1,4-diene-3,11,20-trione [ACD/IUPAC Name]
(16α)-9-Fluoro-17,21-dihydroxy-16-méthylprégna-1,4-diène-3,11,20-trione [French] [ACD/IUPAC Name]
11-Dehydrodexamethasone
2964-81-0 [RN]
Pregna-1,4-diene-3,11,20-trione, 9-fluoro-17,21-dihydroxy-16-methyl-, (16α)- [ACD/Index Name]
1,4-PREGNADIEN-9α-FLUORO-16α-METHYL-17,21-DIOL-3,11,20-TRIONE
Pregna-1,4-diene-3,11,20-trione, 9-fluoro-17,21-dihydroxy-16-methyl-, (16α)-

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

Density: 1.3±0.1 g/cm3
Boiling Point: 562.2±50.0 °C at 760 mmHg
Vapour Pressure: 0.0±3.5 mmHg at 25°C
Enthalpy of Vaporization: 97.1±6.0 kJ/mol
Flash Point: 293.8±30.1 °C
Index of Refraction: 1.584
Molar Refractivity: 98.8±0.4 cm3
#H bond acceptors: 5
#H bond donors: 2
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 2.08
ACD/LogD (pH 5.5): 1.89
ACD/BCF (pH 5.5): 16.22
ACD/KOC (pH 5.5): 255.77
ACD/LogD (pH 7.4): 1.89
ACD/BCF (pH 7.4): 16.22
ACD/KOC (pH 7.4): 255.77
Polar Surface Area: 92 Å2
Polarizability: 39.2±0.5 10-24cm3
Surface Tension: 54.7±5.0 dyne/cm
Molar Volume: 295.1±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) =  1.91

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  505.31  (Adapted Stein & Brown method)
    Melting Pt (deg C):  215.08  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  3.85E-013  (Modified Grain method)
    Subcooled liquid VP: 4.07E-011 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):  81.42
       log Kow used: 1.91 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  56.157 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 :   7.47E-010  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.429E-015 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.91  (KowWin est)
  Log Kaw used:  -7.515  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.425
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.0052
   Biowin2 (Non-Linear Model)     :   0.0001
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   1.5804  (recalcitrant)
   Biowin4 (Primary Survey Model) :   2.7334  (weeks-months)
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5382
   Biowin6 (MITI Non-Linear Model):   0.0015
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -2.3387
 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):  5.43E-009 Pa (4.07E-011 mm Hg)
  Log Koa (Koawin est  ): 9.425
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  553 
       Octanol/air (Koa) model:  0.000653 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1 
       Mackay model           :  1 
       Octanol/air (Koa) model:  0.0497 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  61.1329 E-12 cm3/molecule-sec
      Half-Life =     0.175 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     2.100 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     1.312500 E-17 cm3/molecule-sec
      Half-Life =     0.873 Days (at 7E11 mol/cm3)
      Half-Life =     20.955 Hrs
   Fraction sorbed to airborne particulates (phi): 1 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  95.97
      Log Koc:  1.982 

 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 = 0.774 (BCF = 5.937)
       log Kow used: 1.91 (estimated)

 Volatilization from Water:
    Henry LC:  7.47E-010 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.549E+006  hours   (6.453E+004 days)
    Half-Life from Model Lake :  1.69E+007  hours   (7.04E+005 days)

 Removal In Wastewater Treatment:
    Total removal:               2.17  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     2.08  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       0.0809          3.5          1000       
   Water     30.4            4.32e+003    1000       
   Soil      69.4            8.64e+003    1000       
   Sediment  0.111           3.89e+004    0          
     Persistence Time: 1.73e+003 hr

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