ChemSpider 2D Image | Butobarbital | C10H16N2O3

Butobarbital

  • Molecular FormulaC10H16N2O3
  • Average mass212.246 Da
  • Monoisotopic mass212.116089 Da
  • ChemSpider ID6229

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Butobarbital [Wiki]
2(5H)-Pyrimidinone, 5-butyl-5-ethyl-4,6-dihydroxy- [ACD/Index Name]
2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-butyl-5-ethyl- [ACD/Index Name]
201-019-9 [EINECS]
5-Butyl-5-ethyl-2,4,6(1H,3H,5H)pyrimidinetrione
5-Butyl-5-ethyl-2,4,6(1H,3H,5H)-pyrimidinetrione [ACD/IUPAC Name]
5-Butyl-5-éthyl-2,4,6(1H,3H,5H)-pyrimidinetrione [French] [ACD/IUPAC Name]
5-Butyl-5-ethyl-2,4,6(1H,3H,5H)-pyrimidintrion [German] [ACD/IUPAC Name]
5-Butyl-5-ethyl-4,6-dihydroxy-2(5H)-pyrimidinon [German] [ACD/IUPAC Name]
5-Butyl-5-ethyl-4,6-dihydroxy-2(5H)-pyrimidinone [ACD/IUPAC Name]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

OHZ8QAW6YC [DBID]
BRN 0201786 [DBID]
D02618 [DBID]
NSC 229336 [DBID]
NSC229336 [DBID]
UNII:OHZ8QAW6YC [DBID]
UNII-OHZ8QAW6YC [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
  • Gas Chromatography
    • Retention Index (Kovats):

      1750 (estimated with error: 89) NIST Spectra mainlib_352160, replib_313001, replib_246211, replib_289388, replib_379321
      1665 (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: 77281; 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
      1642 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column diameter: 0.22 mm; Column length: 25 m; Column type: Capillary; Start T: 200 C; CAS no: 77281; Active phase: BP-1; Carrier gas: N2; Phase thickness: 0.25 um; Data type: Kovats RI; Authors: Japp, M.; Gill, R.; Osselton, M.D., Comparison of drug retention indices determined on packed, wide bore capillary and narrow bore capillary columns, J. Forensic Sci., 32(6), 1987, 1574-1586., 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: 77281; 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
      1649 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column diameter: 0.53 mm; Column length: 25 m; Column type: Capillary; Start T: 200 C; CAS no: 77281; Active phase: BP-1; Carrier gas: N2; Phase thickness: 1 um; Data type: Kovats RI; Authors: Japp, M.; Gill, R.; Osselton, M.D., Comparison of drug retention indices determined on packed, wide bore capillary and narrow bore capillary columns, J. Forensic Sci., 32(6), 1987, 1574-1586.) NIST Spectra nist ri
      1646 (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: 77281; 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
      1645 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 77281; Active phase: SE-30; Data type: Kovats RI; Authors: Stead, A.H.; Gill, R.; Evans, A.T.; Moffat, A.C., Predictions of gas chromatographic retention characteristics of barbiturates from molecular structure, J. Chromatogr., 234, 1982, 277-283.) NIST Spectra nist ri
      1680 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; CAS no: 77281; 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.) NIST Spectra nist ri
      1650 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 180 C; CAS no: 77281; 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
      1655 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 77281; 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):

      1642 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; Start T: 100 C; End T: 300 C; CAS no: 77281; Active phase: BP-1; Data type: Normal alkane RI; Authors: MHA, Directorate of ForensicScience., Forensic Toxicology, 9999.) NIST Spectra nist ri
      1647.3 (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: 8 K/min; Start T: 155 C; End T: 290 C; End time: 10 min; Start time: 4 min; CAS no: 77281; Active phase: SPB-1; Carrier gas: He; Phase thickness: 10 um; Data type: Normal alkane RI; Authors: Coudore, F.; Alazard, J.-M.; Paire, M.; Andraud, G.; Lavarenne, J., Rapid toxicological screening of barbiturates in plasma by wide-bore capillary gas chromatography and nitrogen-phosphorus detection, J. Anal. Toxicol., 17, 1993, 109-113.) NIST Spectra nist ri
      1667.8 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.26 mm; Column length: 30 m; Column type: Capillary; Heat rate: 8 K/min; Start T: 120 C; End T: 280 C; End time: 22 min; Start time: 1 min; CAS no: 77281; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Manca, D.; Ferron, L.; Weber, J-P., A System for Toxicological Screening by Capillary Gas Chromatography with Use of Drug Retention Index Based on Nitrogen-Containing Reference Compounds, Clin. Chem., 35(4), 1989, 601-607.) NIST Spectra nist ri
      1640 (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: 77281; 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., 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: 77281; 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
      1660 (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: 77281; 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
      1665 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Other; CAS no: 77281; 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
      1665.7 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 2 m; Column type: Packed; Heat rate: 10 K/min; Start T: 220 C; End T: 270 C; CAS no: 77281; Active phase: OV-101; Substrate: Chromosorb (100-120 mesh); Data type: Normal alkane RI; Authors: Cailleux, A.; Turcant, A.; Premel-Cabic, A.; Allain, P., Identification and Quantitation of Neutral and Basic Drugs in Blood By Gas Chromatography and Mass Spectrometry, J. Chromatogr. Sci., 19, 1981, 163-176.) NIST Spectra nist ri
      1667 (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: 77281; 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: 77281; 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
      1661.4 (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: 77281; 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
      1663 (Program type: Isothermal; Col... (show more) umn class: Semi-standard non-polar; Column length: 1.5 m; Column type: Packed; CAS no: 77281; Active phase: Apolane; Data type: Normal alkane RI; Authors: Huggett, A.; Andrews, P.; Flanagan, R.J., Rapid Micro-Method for the Measurement of Paracetamol in Blood Plasma or Serum Using Gas-Liquid Chromatography with Flame-Ionisation Detection., J. Chromatogr., 209, 1981, 67-76.) NIST Spectra nist ri
    • Retention Index (Linear):

      1641 (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: 77281; 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: 77281; 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
      1665 (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: 77281; 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
      1702.9 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: Multi-step temperature program; T(initial)=60C; T(final)=270C; CAS no: 77281; Active phase: VF-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Tret'yakov, K.V., Retention Data. NIST Mass Spectrometry Data Center., 2008.) NIST Spectra nist ri

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

Density: 1.1±0.1 g/cm3
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction: 1.461
Molar Refractivity: 53.4±0.3 cm3
#H bond acceptors: 5
#H bond donors: 2
#Freely Rotating Bonds: 4
#Rule of 5 Violations: 0
ACD/LogP: 1.71
ACD/LogD (pH 5.5): 1.77
ACD/BCF (pH 5.5): 12.97
ACD/KOC (pH 5.5): 217.72
ACD/LogD (pH 7.4): 1.66
ACD/BCF (pH 7.4): 10.03
ACD/KOC (pH 7.4): 168.32
Polar Surface Area: 75 Å2
Polarizability: 21.2±0.5 10-24cm3
Surface Tension: 33.8±3.0 dyne/cm
Molar Volume: 194.6±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) =  1.59
    Log Kow (Exper. database match) =  1.73
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  531.05  (Adapted Stein & Brown method)
    Melting Pt (deg C):  227.10  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  4.12E-010  (Modified Grain method)
    MP  (exp database):  128.5 deg C
    Subcooled liquid VP: 4.46E-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):  1260
       log Kow used: 1.73 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  4880 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1300.7 mg/L
    Wat Sol (Exper. database match) =  4880.00
       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 :   6.36E-013  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  9.132E-014 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.73  (exp database)
  Log Kaw used:  -10.585  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.315
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.5710
   Biowin2 (Non-Linear Model)     :   0.5288
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8163  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6571  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3468
   Biowin6 (MITI Non-Linear Model):   0.1906
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.1289
 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):  5.95E-007 Pa (4.46E-009 mm Hg)
  Log Koa (Koawin est  ): 12.315
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  5.04 
       Octanol/air (Koa) model:  0.507 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.995 
       Mackay model           :  0.998 
       Octanol/air (Koa) model:  0.976 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  13.0194 E-12 cm3/molecule-sec
      Half-Life =     0.822 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     9.858 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   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    :  68.36
      Log Koc:  1.835 

 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 = 0.632 (BCF = 4.286)
       log Kow used: 1.73 (expkow database)

 Volatilization from Water:
    Henry LC:  6.36E-013 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.341E+009  hours   (5.588E+007 days)
    Half-Life from Model Lake : 1.463E+010  hours   (6.096E+008 days)

 Removal In Wastewater Treatment:
    Total removal:               2.06  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.97  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       0.000293        19.7         1000       
   Water     26.1            360          1000       
   Soil      73.8            720          1000       
   Sediment  0.0718          3.24e+003    0          
     Persistence Time: 678 hr




                    

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