ChemSpider 2D Image | mephenytoin | C12H14N2O2

mephenytoin

  • Molecular FormulaC12H14N2O2
  • Average mass218.252 Da
  • Monoisotopic mass218.105530 Da
  • ChemSpider ID3920

More details:

Featured data source
The Merck Index Online

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

(±)-5-Ethyl-3-methyl-5-phenyl-2,4-imidazolidinedione
(±)-5-Ethyl-3-methyl-5-phenylhydantoin
(±)-Mephenytoin
2,4-Imidazolidinedione, 5-ethyl-3-methyl-5-phenyl- [ACD/Index Name]
200-012-8 [EINECS]
4H-Imidazol-4-one, 5-ethyl-3,5-dihydro-2-hydroxy-3-methyl-5-phenyl- [ACD/Index Name]
50-12-4 [RN]
5-Ethyl-2-hydroxy-3-methyl-5-phenyl-3,5-dihydro-4H-imidazol-4-on [German] [ACD/IUPAC Name]
5-Ethyl-2-hydroxy-3-methyl-5-phenyl-3,5-dihydro-4H-imidazol-4-one [ACD/IUPAC Name]
5-Éthyl-2-hydroxy-3-méthyl-5-phényl-3,5-dihydro-4H-imidazol-4-one [French] [ACD/IUPAC Name]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

1463 [DBID]
R420KW629U [DBID]
UNII:R420KW629U [DBID]
A1073/0050334 [DBID]
AB8E1O1L3L [DBID]
AIDS124490 [DBID]
AIDS-124490 [DBID]
BRN 0017282 [DBID]
D00375 [DBID]
D008617 [DBID]
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  • Experimental Physico-chemical Properties
  • Miscellaneous
  • Gas Chromatography

    • Retention Index (Kovats):

      1891 (estimated with error: 83) NIST Spectra mainlib_113831, replib_22671, replib_246243, replib_312901
      1780 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 0.6 m; Column type: Packed; Heat rate: 30 K/min; Start T: 100 C; End T: 310 C; End time: 5 min; Start time: 3 min; CAS no: 50124; Active phase: OV-101; Carrier gas: N2; Substrate: Chromosorb G HP; Data type: Kovats RI; Authors: Maurer, H.H., Detection of anticonvulsants and their metabolites in urine within a "general unknown" analysis procedure using computerized gas chromatography-mass spectrometry, Arch. Toxicol., 64(7), 1990, 554-561.) NIST Spectra nist ri
      1786 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.49 mm; Column length: 25 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 100 C; End T: 275 C; End time: 15 min; Start time: 2 min; CAS no: 50124; Active phase: SE-30; Phase thickness: 1.14 um; Data type: Kovats RI; Authors: Schepers, P.; Wijsbeek, J.; Franke, J.P.; de Zeeuw, R.A., Applicability of capillary gas chromatography to substance identification in toxicology by means of retention indices, J. Forensic Sci., 27(1), 1982, 49-60.) NIST Spectra nist ri

    • Retention Index (Normal Alkane):

      1748 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 10 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 130 C; End T: 230 C; CAS no: 50124; Active phase: DB-1; Carrier gas: He; Phase thickness: 2.65 um; Data type: Normal alkane RI; Authors: Anderson, W.H.; Fuller, D.C., A simplified procedure for the isolation, characterization, and identification of weak acid and neutral drugs from whole blood, J. Anal. Toxicol., 11, 1987, 198-204.) NIST Spectra nist ri
      1765 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 130 C; End T: 290 C; End time: 10 min; Start time: 1 min; CAS no: 50124; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Sharp, M.E., A rapid screening procedure for acidic and neutral drugs in blood by high resolution gas chromatography, J. Anal. Toxicol., 11, 1987, 8-11.) NIST Spectra nist ri
      1770 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 2 m; Column type: Packed; Heat rate: 2.5 K/min; Start T: 120 C; End T: 200 C; CAS no: 50124; Active phase: SE-30; Substrate: Gas Chrom P; Data type: Normal alkane RI; Authors: Marozzi, E.; Gambaro, V.; Saligari, E.; Mariani, R.; Lodi, F., Use of the retention index in gas chromatographic studies of drugs, J. Anal. Toxicol., 6, 1982, 185-192.) NIST Spectra nist ri
      1791 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Other; CAS no: 50124; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Ardrey, R.E.; Moffat, A.C., Gas-liquid chromatographic retention indices of 1318 substances of toxicological interest on SE-30 or OV-1 stationary phase, J. Chromatogr., 220, 1981, 195-252.) NIST Spectra nist ri
      1796 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 6 ft; Column type: Packed; Heat rate: 8 K/min; Start T: 130 C; End T: 290 C; End time: 8 min; Start time: 2 min; CAS no: 50124; Active phase: SE-30; Carrier gas: N2; Substrate: Chromosorb W AW DMS; Data type: Normal alkane RI; Authors: Peel, H.W.; Perrigo, B., A practical gas chromatographic screening procedure for toxicological analysis, Can.Soc.Forens.Sci.J., 9(2), 1975, 69-74., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 6 ft; Column type: Packed; Heat rate: 8 K/min; Start T: 130 C; End T: 290 C; End time: 8 min; Start time: 2 min; CAS no: 50124; Active phase: SE-30; Carrier gas: Nitrogen; Substrate: Chromosorb W AW DMS (80-100 mesh); Data type: Normal alkane RI; Authors: Peel, H.W.; Perrigo, B., A practical gas chromatographic screening procedure for toxicological analysis, Can. Soc. Forens. Sci. J., 9(2), 1976, 69-74.) NIST Spectra nist ri

    • Retention Index (Linear):

      1795 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 1.8 m; Column type: Packed; Heat rate: 8 K/min; Start T: 130 C; End T: 290 C; End time: 8 min; Start time: 2 min; CAS no: 50124; Active phase: SE-30; Carrier gas: N2; Substrate: Chromosorb W; Data type: Linear RI; Authors: Perrigo, B.J.; Peel, H.W., The use of retention indices and temperature-programmed gas chromatography in analytical toxicology, J. Chromatogr. Sci., 19, 1981, 219-226.) NIST Spectra nist ri

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

Density: 1.2±0.1 g/cm3
Boiling Point: 352.2±45.0 °C at 760 mmHg
Vapour Pressure: 0.0±0.8 mmHg at 25°C
Enthalpy of Vaporization: 63.0±3.0 kJ/mol
Flash Point: 166.8±28.7 °C
Index of Refraction: 1.591
Molar Refractivity: 61.6±0.5 cm3
#H bond acceptors: 4
#H bond donors: 1
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 1.41
ACD/LogD (pH 5.5): 0.43
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 22.37
ACD/LogD (pH 7.4): 0.42
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 22.12
Polar Surface Area: 53 Å2
Polarizability: 24.4±0.5 10-24cm3
Surface Tension: 45.2±7.0 dyne/cm
Molar Volume: 182.5±7.0 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) =  1.65
    Log Kow (Exper. database match) =  1.69
       Exper. Ref:  Sangster (1994)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  429.83  (Adapted Stein & Brown method)
    Melting Pt (deg C):  179.82  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.22E-007  (Modified Grain method)
    MP  (exp database):  135 deg C
    Subcooled liquid VP: 1.55E-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):  1267
       log Kow used: 1.69 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  13.781 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   4.90E-010  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.765E-011 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.69  (exp database)
  Log Kaw used:  -7.698  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.388
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.5878
   Biowin2 (Non-Linear Model)     :   0.4963
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.5267  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.3843  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2218
   Biowin6 (MITI Non-Linear Model):   0.0905
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.1097
 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):  0.000207 Pa (1.55E-006 mm Hg)
  Log Koa (Koawin est  ): 9.388
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.0145 
       Octanol/air (Koa) model:  0.0006 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.344 
       Mackay model           :  0.537 
       Octanol/air (Koa) model:  0.0458 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  10.6632 E-12 cm3/molecule-sec
      Half-Life =     1.003 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    12.037 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.441 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  490.6
      Log Koc:  2.691 

 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 = 0.601 (BCF = 3.993)
       log Kow used: 1.69 (expkow database)

 Volatilization from Water:
    Henry LC:  4.9E-010 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.765E+006  hours   (7.355E+004 days)
    Half-Life from Model Lake : 1.926E+007  hours   (8.024E+005 days)

 Removal In Wastewater Treatment:
    Total removal:               2.04  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.95  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       0.00637         24.1         1000       
   Water     29.2            900          1000       
   Soil      70.8            1.8e+003     1000       
   Sediment  0.0835          8.1e+003     0          
     Persistence Time: 1.26e+003 hr

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