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ChemSpider 2D Image | hexobarbital | C12H16N2O3

hexobarbital

  • Molecular FormulaC12H16N2O3
  • Average mass236.267 Da
  • Monoisotopic mass236.116089 Da
  • ChemSpider ID3482

More details:



Featured data source



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

2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-(1-cyclohexen-1-yl)-1,5-dimethyl- [ACD/Index Name]
200-264-9 [EINECS]
200-659-6 [EINECS]
4,6(1H,5H)-pyrimidinedione, 5-(1-cyclohexen-1-yl)-2-hydroxy-1,5-dimethyl-
5-(1-Cyclohexen-1-yl)-1,5-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione [ACD/IUPAC Name]
5-(1-Cyclohexén-1-yl)-1,5-diméthyl-2,4,6(1H,3H,5H)-pyrimidinetrione [French] [ACD/IUPAC Name]
5-(1-Cyclohexen-1-yl)-1,5-dimethyl-2,4,6(1H,3H,5H)-pyrimidintrion [German] [ACD/IUPAC Name]
5-(1-Cyclohexenyl)-1,5-dimethylbarbituric acid
5-(cyclohex-1-en-1-yl)-1,5-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione
56-29-1 [RN]
More...

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

2086 [DBID]
AL8Z8K3P6S [DBID]
UNII:AL8Z8K3P6S [DBID]
AI3-61892 [DBID]
C11723 [DBID]
CHEBI:5706 [DBID]
D01071 [DBID]
H1005_SIGMA [DBID]
NSC 71929 [DBID]
NSC255103 [DBID]
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  • Experimental Physico-chemical Properties
  • Miscellaneous
  • Gas Chromatography
    • Retention Index (Kovats):

      2080 (estimated with error: 89) NIST Spectra mainlib_286633, replib_125744, replib_232622, replib_250602, replib_379634
      1855 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; Start T: 200 C; CAS no: 56291; Active phase: OV-101; Carrier gas: N2; Substrate: Chromosorb G AW DMCS (80-100 mesh); Data type: Kovats RI; Authors: Moller, M.R., Comparability of retention indices of polar substances at elevated temperatures, Chromatographia, 9(7), 1976, 311-314., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; 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: 56291; Active phase: SE-30; Carrier gas: N2; Data type: Kovats RI; Authors: Maurer, H.H., Identification and differentiation of barbiturates, other sedative-hypnotics and their metabolites in urine integrated in a general screening procedure using computerized gas chromatography-mass spectrometry, J. Chromatogr., 530, 1990, 307-326.) NIST Spectra nist ri
      1841 (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: 56291; 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
      1843 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.22 mm; Column length: 12 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 120 C; End T: 300 C; End time: 12 min; Start time: 2 min; CAS no: 56291; Active phase: SE-30; Carrier gas: He; Phase thickness: 0.45 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
      1870 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; CAS no: 56291; Active phase: OV-1; Carrier gas: N2; Substrate: Chromosorb G, AW-DMCS; Data type: Kovats RI; Authors: Berninger, H.; Grunnagel, R.; Mall, S.; Moller, M.R., Gas chromatographic identification of unknown substances from body fluids by menas of retention indices, Beitr. Gerichtl. Med., 33, 1975, 185-191., Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; CAS no: 56291; Active phase: OV-1; Carrier gas: N2; Substrate: Chromosorb G, AW-DMCS; Data type: Kovats RI; Authors: Berninger, H.; Grunnagel, R.; Mall, S.; Moller, M.R., Gas chromatographic identification of unknown substances from body fluids by menas of retention indices, Beitr. Gerichtl. Med., 33, 1975, 185-191., Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; CAS no: 56291; Active phase: OV-101; Carrier gas: N2; Substrate: Chromosorb W; Data type: Kovats RI; Authors: McLinden, V.J.; Stenhouse, A.M., A chromatography system for drug identification, Forensic Sci. Int., 13, 1979, 71-79., Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; Start T: 200 C; CAS no: 56291; Active phase: OV-101; Carrier gas: N2; Substrate: Chromosorb G AW DMCS (80-100 mesh); Data type: Kovats RI; Authors: Moller, M.R., Comparability of retention indices of polar substances at elevated temperatures, Chromatographia, 9(7), 1976, 311-314.) NIST Spectra nist ri
      1840 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 180 C; CAS no: 56291; Active phase: OV-1; Substrate: Chromosorb G; Data type: Kovats RI; Authors: Dubsky, H.; Hana, K.; Komarkova, M.; Rittich, B., Pouziti kovatsovych indexu pri toxikologickych analysach, Chem. Listy, 72, 1978, 980-984.) NIST Spectra nist ri
      1853 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 200 C; CAS no: 56291; Active phase: OV-1; Substrate: Chromosorb G; Data type: Kovats RI; Authors: Dubsky, H.; Hana, K.; Komarkova, M.; Rittich, B., Pouziti kovatsovych indexu pri toxikologickych analysach, Chem. Listy, 72, 1978, 980-984.) NIST Spectra nist ri
      1860 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; Start T: 200 C; CAS no: 56291; Active phase: OV-101; Carrier gas: N2; Substrate: Chromosorb G AW DMCS (80-100 mesh); Data type: Kovats RI; Authors: Moller, M.R., Comparability of retention indices of polar substances at elevated temperatures, Chromatographia, 9(7), 1976, 311-314., Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 56291; Active phase: OV-1; Data type: Kovats RI; Authors: Berninger, H.; Moller, M.R., Retentionsindices zur gaschromatographischen Identifizierung von Arzneimitteln, Arch. Toxicol., 37, 1977, 295-305.) NIST Spectra nist ri
    • Retention Index (Normal Alkane):

      1820 (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: 56291; 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
      1839 (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: 56291; 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
      1845 (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: 56291; 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
      1860 (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: 56291; Active phase: OV-1; 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
      1857 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Other; CAS no: 56291; 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
      1850 (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: 56291; 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: 56291; 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
      1875.3 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 320 C; Start time: 1 min; CAS no: 56291; Active phase: HP-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Tienpont, B.; David, F.; Stopforth, A.; Sandra, P., Comprehensive Profiling of Drugs of Abuse in Biological Fluids by Stir-Bar Sorptive Extraction-Thermal Desorption-Capillary Gas Chromatography-Mass Spectrometry, LCGC Europe, , 2003, 2-10.) NIST Spectra nist ri
      1853.7 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Description: 70 0C (0.7 min) ^ 20 0C/min -> 140 0C ^ 10 0C/min -> 280 0C (4 min); CAS no: 56291; Active phase: NB-54; Carrier gas: He; Phase thickness: 0.10 um; Data type: Normal alkane RI; Authors: Ojanpera, I.; Rasanen, I.; Vuori, E., Automated quantitative screening for acidic and neutral drugs in whole blood by dual-column capillary gas chromatography, J. Anal. Toxicol., 15, 1991, 204-208.) NIST Spectra nist ri
      1860.7 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 12.5 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 110 C; End T: 290 C; End time: 6.5 min; Start time: 1 min; CAS no: 56291; Active phase: Ultra-2; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Watts, V.W.; Simonick, T.F., A retention index library for commonly encountered drugs and metabolites using tri-n-alkylamines as reference compounds, nitrogen-phosphorus detectors, and dual capillary chromatography, J. Anal. Toxicol., 11, 1987, 210-214.) NIST Spectra nist ri
    • Retention Index (Linear):

      1862 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.75 mm; Column length: 30 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 160 C; End T: 280 C; End time: 12 min; CAS no: 56291; Active phase: SPB-1; Carrier gas: He; Phase thickness: 1.0 um; Data type: Linear RI; Authors: Christ, D.W.; Noomano, P.; Rosas, M.; Rhone, D., Retention indices by wide-bore capillary gas chromatography with nitrogen-phosphorus detection, J. Anal. Toxicol., 12, 1988, 84-88.) NIST Spectra nist ri
      1817 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 12 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 120 C; End T: 250 C; CAS no: 56291; Active phase: CBP-1; Carrier gas: N2; Data type: Linear RI; Authors: Oyama, N.; Sano, T.; Syoyama, M.; Maeda, K., Studies on systematic analysis of poisonous compounds in forensic chemistry. II. Application of capillary column gas chromatography to substance identification by means of retention indices, Eisei Kagaku, 33(5), 1987, 342-348.) NIST Spectra nist ri
      1831 (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: 8 K/min; Start T: 120 C; End T: 280 C; End time: 5 min; CAS no: 56291; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Perrigo, B.J.; Ballantyne, D.J.; Peel, H.W., Condierations in developing a data base for drugs on a DBI capillary column, J. Can. Soc. Forensic Sci., 17(2), 1984, 41-49., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 120 C; End T: 280 C; End time: 5 min; CAS no: 56291; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Perrigo, B.J.; Peel, H.W.; Ballantyne, D.J., Use of Dual-Column Fused-Silica Capillary Gas Chromatography in Combination with Detector Response Factors for Analytical Toxicology., J. Chromatogr., 341, 1985, 81-88.) NIST Spectra nist ri
      1850 (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: 56291; 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

Density: 1.2±0.1 g/cm3
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction: 1.539
Molar Refractivity: 60.4±0.3 cm3
#H bond acceptors: 5
#H bond donors: 1
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 1.59
ACD/LogD (pH 5.5): 1.93
ACD/BCF (pH 5.5): 17.35
ACD/KOC (pH 5.5): 268.10
ACD/LogD (pH 7.4): 1.84
ACD/BCF (pH 7.4): 13.88
ACD/KOC (pH 7.4): 214.51
Polar Surface Area: 66 Å2
Polarizability: 23.9±0.5 10-24cm3
Surface Tension: 45.9±3.0 dyne/cm
Molar Volume: 192.8±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) =  2.02
    Log Kow (Exper. database match) =  1.98
       Exper. Ref:  Sangster (1994)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  530.67  (Adapted Stein & Brown method)
    Melting Pt (deg C):  226.92  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  2.67E-010  (Modified Grain method)
    MP  (exp database):  146.5 deg C
    Subcooled liquid VP: 4.56E-009 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):  573.4
       log Kow used: 1.98 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  435 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1215.9 mg/L
    Wat Sol (Exper. database match) =  435.00
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   8.48E-013  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.448E-013 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.98  (exp database)
  Log Kaw used:  -10.460  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.440
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.4511
   Biowin2 (Non-Linear Model)     :   0.1121
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.4649  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.3534  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.1628
   Biowin6 (MITI Non-Linear Model):   0.0530
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.2109
 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):  6.08E-007 Pa (4.56E-009 mm Hg)
  Log Koa (Koawin est  ): 12.440
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  4.93 
       Octanol/air (Koa) model:  0.676 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.994 
       Mackay model           :  0.997 
       Octanol/air (Koa) model:  0.982 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  95.1117 E-12 cm3/molecule-sec
      Half-Life =     0.112 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.349 Hrs
   Ozone Reaction:
      OVERALL Ozone Rate Constant =     7.393750 E-17 cm3/molecule-sec
      Half-Life =     0.155 Days (at 7E11 mol/cm3)
      Half-Life =      3.720 Hrs
   Fraction sorbed to airborne particulates (phi): 0.996 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  156.7
      Log Koc:  2.195 

 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 = 0.825 (BCF = 6.677)
       log Kow used: 1.98 (expkow database)

 Volatilization from Water:
    Henry LC:  8.48E-013 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.061E+009  hours   (4.422E+007 days)
    Half-Life from Model Lake : 1.158E+010  hours   (4.824E+008 days)

 Removal In Wastewater Treatment:
    Total removal:               2.23  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     2.13  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       0.000286        1.56         1000       
   Water     23.4            900          1000       
   Soil      76.5            1.8e+003     1000       
   Sediment  0.0883          8.1e+003     0          
     Persistence Time: 1.41e+003 hr




                    

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