ChemSpider 2D Image | Stepharine | C18H19NO3

Stepharine

  • Molecular FormulaC18H19NO3
  • Average mass297.348 Da
  • Monoisotopic mass297.136505 Da
  • ChemSpider ID168085
  • defined stereocentres - 1 of 1 defined stereocentres


More details:






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

(8a'R)-5',6'-Dimethoxy-2',3',8',8a'-tetrahydro-1'H,4H-spiro[cyclohexa-2,5-diene-1,7'-cyclopenta[ij]isoquinolin]-4-one [ACD/IUPAC Name]
Spiro[cyclohexa-2,5-diene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one, 2',3',8',8'a-tetrahydro-5',6'-dimethoxy-, (8a'R)- [ACD/Index Name]
Stepharine
(+)-Stepharine
(R)-stepharine
2810-21-1 [RN]

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

AI3-34587 [DBID]
  • Miscellaneous
    • Chemical Class:

      An isoquinoline alkaloid with formula C<smallsub>18</smallsub>H<smallsub>19</smallsub>NO<smallsub>3</smallsub> that is isolated from several species of <ital>Stephania</ital>. ChEBI CHEBI:132715

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

Density: 1.3±0.1 g/cm3
Boiling Point: 487.1±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.2 mmHg at 25°C
Enthalpy of Vaporization: 75.3±3.0 kJ/mol
Flash Point: 248.4±28.7 °C
Index of Refraction: 1.633
Molar Refractivity: 83.2±0.4 cm3
#H bond acceptors: 4
#H bond donors: 1
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 1.24
ACD/LogD (pH 5.5): -0.76
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 1.00
ACD/LogD (pH 7.4): 0.94
ACD/BCF (pH 7.4): 2.01
ACD/KOC (pH 7.4): 34.85
Polar Surface Area: 48 Å2
Polarizability: 33.0±0.5 10-24cm3
Surface Tension: 54.1±5.0 dyne/cm
Molar Volume: 233.2±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) =  1.30

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  417.87  (Adapted Stein & Brown method)
    Melting Pt (deg C):  174.23  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  8.65E-008  (Modified Grain method)
    Subcooled liquid VP: 3.05E-006 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):  1.009e+004
       log Kow used: 1.30 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  13514 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  3.354E-012 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :  -0.2658
   Biowin2 (Non-Linear Model)     :   0.0000
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.2901  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.2236  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.1192
   Biowin6 (MITI Non-Linear Model):   0.0137
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -1.2519
 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):  0.000407 Pa (3.05E-006 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00738 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.21 
       Mackay model           :  0.371 
       Octanol/air (Koa) model:  not available

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 352.3459 E-12 cm3/molecule-sec
      Half-Life =     0.030 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    21.857 Min
   Ozone Reaction:
      OVERALL Ozone Rate Constant =    16.115000 E-17 cm3/molecule-sec
      Half-Life =     0.071 Days (at 7E11 mol/cm3)
      Half-Life =      1.707 Hrs
   Fraction sorbed to airborne particulates (phi): 0.291 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  95.87
      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 = 0.300 (BCF = 1.994)
       log Kow used: 1.30 (estimated)

 Volatilization from Water:
    Henry LC:  3.35E-012 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River:  3.01E+008  hours   (1.254E+007 days)
    Half-Life from Model Lake : 3.284E+009  hours   (1.368E+008 days)

 Removal In Wastewater Treatment:
    Total removal:               1.93  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.83  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       5.48e-005       0.511        1000       
   Water     36.5            900          1000       
   Soil      63.4            1.8e+003     1000       
   Sediment  0.084           8.1e+003     0          
     Persistence Time: 1.12e+003 hr




                    

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