ChemSpider 2D Image | alfatradiol | C18H24O2

alfatradiol

  • Molecular FormulaC18H24O2
  • Average mass272.382 Da
  • Monoisotopic mass272.177643 Da
  • ChemSpider ID61840
  • defined stereocentres - 5 of 5 defined stereocentres


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Featured data source



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

(-)-estradiol
(17a)-Estra-1,3,5(10)-triene-3,17-diol
(17α)-Estra-1,3,5(10)-trien-3,17-diol [German] [ACD/IUPAC Name]
(17α)-Estra-1,3,5(10)-triene-3,17-diol [ACD/IUPAC Name]
(17α)-Estra-1,3,5(10)-triène-3,17-diol [French] [ACD/IUPAC Name]
(1R,3aS,3bR,9bS,11aS)-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,9bH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,7-diol
1,3,5(10)-Estratriene-3,17α-diol
13b-Methyl-1,3,5(10)-gonatriene-3,17a-diol
17a-Estradiol
17a-Oestradiol
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

8057 [DBID]
BRN 2698044 [DBID]
C02537 [DBID]
CCRIS 7203 [DBID]
CHEBI:17160 [DBID]
E8750_SIGMA [DBID]
KBio2_002281 [DBID]
KBio2_004849 [DBID]
KBio2_007417 [DBID]
KBio3_002761 [DBID]
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  • References
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Toxicity:

      Organic Compound; Drug; Food Toxin; Metabolite; Animal Toxin; Natural Compound Toxin, Toxin-Target Database T3D4832
    • Chemical Class:

      An estradiol that is estra-1,3,5(10)-triene substituted by hydroxy groups at positions 3 and 17 (the 17<stereo>alpha</stereo> stereoisomer). ChEBI CHEBI:17160
      An estradiol that is estra-1,3,5(10)-triene substituted by hydroxy groups at positions 3 and 17 (the 17alpha stereoisomer). ChEBI https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:17160, CHEBI:17160
    • Bio Activity:

      <p>Endogenous estrogen receptor (ER) ligand (K<sub>i</sub> values are 0.2 and 1.2 nM at ER? and ER? respectively). Shows antioxidant, anti-neurodegenerative and neuroprotective effects.</p> <p><strong>This is a research use only product, exclusively for biomedical research use at verified research organizations. It is not intended for human or veterinary use.</strong></p> Hello Bio HB2493
      Biochemicals & small molecules Hello Bio HB2493
      Endogenous estrogen receptor (ER) ligand (K<sub>i</sub> values are 0.2 and 1.2 nM at ER&alpha; and ER&beta; respectively). Non-feminizing estrogen. Shows antioxidant, anti-neurodegenerative and neuroprotective effects. Orally active. Hello Bio HB2493
      Endogenous estrogen receptor agonist Tocris Bioscience 2823
      Endogenous estrogen receptor ligand (Ki values are 0.2 and 1.2 nM for ER? and ER? receptors respectively). ?-Estradiol (Cat. No. 2824) also available. Tocris Bioscience 2823
      Endogenous estrogen receptor ligand (Ki values are 0.2 and 1.2 nM for ERalpha and ERbeta receptors respectively). beta-Estradiol (Cat. No. 2824) also available. Tocris Bioscience 2823
      Endogenous estrogen receptor ligand (Ki values are 0.2 and 1.2 nM for ERalpha and ERbeta receptors respectively). beta-Estradiol also available. Tocris Bioscience 2823
      Estrogen and Related Receptors Tocris Bioscience 2823
      Estrogen receptor (ER) ligand. Non-feminizing estrogen. Hello Bio HB2493
      Nuclear Receptors Tocris Bioscience 2823
      Receptors & Transporters/Nuclear hormone/Estrogen and related/Non-selective Hello Bio HB2493

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

Density: 1.2±0.1 g/cm3
Boiling Point: 445.9±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.1 mmHg at 25°C
Enthalpy of Vaporization: 74.2±3.0 kJ/mol
Flash Point: 209.6±23.3 °C
Index of Refraction: 1.599
Molar Refractivity: 79.5±0.3 cm3
#H bond acceptors: 2
#H bond donors: 2
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: 4.13
ACD/LogD (pH 5.5): 3.62
ACD/BCF (pH 5.5): 329.70
ACD/KOC (pH 5.5): 2208.39
ACD/LogD (pH 7.4): 3.62
ACD/BCF (pH 7.4): 329.27
ACD/KOC (pH 7.4): 2205.52
Polar Surface Area: 40 Å2
Polarizability: 31.5±0.5 10-24cm3
Surface Tension: 49.0±3.0 dyne/cm
Molar Volume: 232.6±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) =  3.94
    Log Kow (Exper. database match) =  4.01
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  395.47  (Adapted Stein & Brown method)
    Melting Pt (deg C):  152.43  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.99E-009  (Modified Grain method)
    MP  (exp database):  221.5 deg C
    Subcooled liquid VP: 2.51E-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):  81.97
       log Kow used: 4.01 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  3.6 mg/L (27 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)
     Water Sol (Exper. database match) =  3.9 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  50.075 mg/L
    Wat Sol (Exper. database match) =  3.60
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)
    Wat Sol (Exper. database match) =  3.90
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   3.64E-011  atm-m3/mole
   Group Method:   1.41E-012  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  8.701E-012 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  4.01  (exp database)
  Log Kaw used:  -8.827  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.837
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.8178
   Biowin2 (Non-Linear Model)     :   0.6452
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.4518  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.3334  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2903
   Biowin6 (MITI Non-Linear Model):   0.1058
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.3354
 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):  3.35E-005 Pa (2.51E-007 mm Hg)
  Log Koa (Koawin est  ): 12.837
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.0896 
       Octanol/air (Koa) model:  1.69 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.764 
       Mackay model           :  0.878 
       Octanol/air (Koa) model:  0.993 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 122.7292 E-12 cm3/molecule-sec
      Half-Life =     0.087 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.046 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.821 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  1.603E+004
      Log Koc:  4.205 

 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 = 2.388 (BCF = 244.2)
       log Kow used: 4.01 (expkow database)

 Volatilization from Water:
    Henry LC:  1.41E-012 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River: 6.853E+008  hours   (2.855E+007 days)
    Half-Life from Model Lake : 7.476E+009  hours   (3.115E+008 days)

 Removal In Wastewater Treatment:
    Total removal:              30.52  percent
    Total biodegradation:        0.32  percent
    Total sludge adsorption:    30.20  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       0.000262        2.09         1000       
   Water     10.9            900          1000       
   Soil      86.4            1.8e+003     1000       
   Sediment  2.64            8.1e+003     0          
     Persistence Time: 1.89e+003 hr




                    

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