ChemSpider 2D Image | 8,8-Dimethyl-2-oxo-9,10-dihydro-2H,8H-pyrano[2,3-f]chromene-9,10-diyl diacetate | C18H18O7

8,8-Dimethyl-2-oxo-9,10-dihydro-2H,8H-pyrano[2,3-f]chromene-9,10-diyl diacetate

  • Molecular FormulaC18H18O7
  • Average mass346.331 Da
  • Monoisotopic mass346.105255 Da
  • ChemSpider ID401362

More details:






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

2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one, 9,10-bis(acetyloxy)-9,10-dihydro-8,8-dimethyl- [ACD/Index Name]
8,8-Dimethyl-2-oxo-9,10-dihydro-2H,8H-pyrano[2,3-f]chromen-9,10-diyl-diacetat [German] [ACD/IUPAC Name]
8,8-Dimethyl-2-oxo-9,10-dihydro-2H,8H-pyrano[2,3-f]chromene-9,10-diyl diacetate [ACD/IUPAC Name]
Diacétate de 8,8-diméthyl-2-oxo-9,10-dihydro-2H,8H-pyrano[2,3-f]chromène-9,10-diyle [French] [ACD/IUPAC Name]
3',4'-Di-O-acetyl-cis-khellactone
3',4'-Di-O-acetyl-trans-khellactone
Acetic acid 9-acetoxy-8,8-dimethyl-2-oxo-9,10-dihydro-2H,8H-pyrano[2,3-f]chromen-10-yl ester
Qianhucoumarin D

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

AIDS006518 [DBID]
AIDS-006518 [DBID]
AIDS006532 [DBID]
AIDS-006532 [DBID]

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

Density: 1.3±0.1 g/cm3
Boiling Point: 447.0±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.1 mmHg at 25°C
Enthalpy of Vaporization: 70.5±3.0 kJ/mol
Flash Point: 196.2±28.8 °C
Index of Refraction: 1.576
Molar Refractivity: 85.4±0.4 cm3
#H bond acceptors: 7
#H bond donors: 0
#Freely Rotating Bonds: 4
#Rule of 5 Violations: 0
ACD/LogP: 2.49
ACD/LogD (pH 5.5): 2.72
ACD/BCF (pH 5.5): 68.97
ACD/KOC (pH 5.5): 720.65
ACD/LogD (pH 7.4): 2.72
ACD/BCF (pH 7.4): 68.97
ACD/KOC (pH 7.4): 720.65
Polar Surface Area: 88 Å2
Polarizability: 33.9±0.5 10-24cm3
Surface Tension: 53.1±5.0 dyne/cm
Molar Volume: 258.1±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) =  2.33

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  443.06  (Adapted Stein & Brown method)
    Melting Pt (deg C):  154.17  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  3.51E-008  (Modified Grain method)
    Subcooled liquid VP: 7.3E-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):  67.39
       log Kow used: 2.32 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  17.128 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.65E-012  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.374E-010 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.33  (KowWin est)
  Log Kaw used:  -9.965  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.295
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   1.0532
   Biowin2 (Non-Linear Model)     :   1.0000
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.5842  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.9586  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   1.0090
   Biowin6 (MITI Non-Linear Model):   0.8905
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6118
 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):  9.73E-005 Pa (7.3E-007 mm Hg)
  Log Koa (Koawin est  ): 12.295
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.0308 
       Octanol/air (Koa) model:  0.484 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.527 
       Mackay model           :  0.711 
       Octanol/air (Koa) model:  0.975 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  54.5881 E-12 cm3/molecule-sec
      Half-Life =     0.196 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     2.351 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     2.100000 E-17 cm3/molecule-sec
      Half-Life =     0.546 Days (at 7E11 mol/cm3)
      Half-Life =     13.097 Hrs
   Fraction sorbed to airborne particulates (phi): 0.619 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  3770
      Log Koc:  3.576 

 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 = 1.090 (BCF = 12.31)
       log Kow used: 2.32 (estimated)

 Volatilization from Water:
    Henry LC:  2.65E-012 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 4.112E+008  hours   (1.713E+007 days)
    Half-Life from Model Lake : 4.485E+009  hours   (1.869E+008 days)

 Removal In Wastewater Treatment:
    Total removal:               2.69  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     2.60  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       5.38e-005       3.46         1000       
   Water     17.9            900          1000       
   Soil      82              1.8e+003     1000       
   Sediment  0.11            8.1e+003     0          
     Persistence Time: 1.58e+003 hr




                    

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