ChemSpider 2D Image | Butabarbital | C10H16N2O3

Butabarbital

  • Molecular FormulaC10H16N2O3
  • Average mass212.246 Da
  • Monoisotopic mass212.116089 Da
  • ChemSpider ID2385

More details:

Featured data source
The Merck Index Online

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

125-40-6 [RN]
2(5H)-Pyrimidinone, 5-ethyl-4,6-dihydroxy-5-(1-methylpropyl)- [ACD/Index Name]
2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-ethyl-5-(1-methylpropyl)- [ACD/Index Name]
204-738-6 [EINECS]
5-(butan-2-yl)-5-ethylpyrimidine-2,4,6(1H,3H,5H)-trione
5-ethyl-5-(1-methylpropyl)pyrimidine-2,4,6(1H,3H,5H)-trione
5-sec-Butyl-5-ethyl-2,4,6(1H,3H,5H)-pyrimidinetrione [ACD/IUPAC Name]
5-sec-Butyl-5-éthyl-2,4,6(1H,3H,5H)-pyrimidinetrione [French] [ACD/IUPAC Name]
5-sec-Butyl-5-ethyl-2,4,6(1H,3H,5H)-pyrimidintrion [German] [ACD/IUPAC Name]
5-sec-Butyl-5-ethyl-4,6-dihydroxy-2(5H)-pyrimidinon [German] [ACD/IUPAC Name]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

1152 [DBID]
P0078O25A9 [DBID]
UNII:P0078O25A9 [DBID]
BRN 0199127 [DBID]
BRN 0199734 [DBID]
C07827 [DBID]
CHEBI:3228 [DBID]
D03180 [DBID]
DEA No. 2100 [DBID]
HSDB 3018 [DBID]
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  • Experimental Physico-chemical Properties
  • Miscellaneous

    • Toxicity:

      Organic Compound; Amine; Amide; Drug; Anti-Anxiety Agent; Hypnotic and Sedative; Barbiturate; Metabolite; Synthetic Compound Toxin, Toxin-Target Database T3D2721
  • Gas Chromatography

    • Retention Index (Kovats):

      1685 (estimated with error: 89) NIST Spectra mainlib_352195, replib_250699, replib_125705, replib_312912, replib_335567
      1655 (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: 125406; 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
      1637 (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: 125406; 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
      1650 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 125406; 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
      1660 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 125406; 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
      1679 (Program type: Isothermal; Col... (show more) umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 15 m; Column type: Capillary; Start T: 220 C; CAS no: 125406; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.2 um; Data type: Kovats RI; Authors: Phillips, A.M.; Logan, B.K.; Stafford, D.T., Further applications for capillary gas chromatography in routine quantitative toxicological analyses, J. Hi. Res. Chromatogr., 13, 1990, 754-758.) NIST Spectra nist ri

    • Retention Index (Normal Alkane):

      1635 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; Start T: 100 C; End T: 300 C; CAS no: 125406; Active phase: BP-1; Data type: Normal alkane RI; Authors: MHA, Directorate of ForensicScience., Forensic Toxicology, 9999.) NIST Spectra nist ri
      1662.4 (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: 125406; 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
      1624 (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: 125406; 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
      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: 125406; 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
      1662 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Other; CAS no: 125406; 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
      1660 (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: 125406; 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: 125406; 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
      1658.8 (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: 125406; 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):

      1669 (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: 125406; 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
      1634 (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: 125406; 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: 125406; 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
      1630 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.2 mm; Column length: 12 m; Column type: Capillary; Heat rate: 20 K/min; Start T: 50 C; End T: 300 C; End time: 3 min; Start time: 1 min; CAS no: 125406; Active phase: Methyl Silicone; Carrier gas: He; Phase thickness: 0.33 um; Data type: Linear RI; Authors: Newton, B.; Foery, R.F., Retention indices and dual capillary gas chromatography for rapid identification of sedative hypnotic drugs in emergency toxicology, J. Anal. Toxicol., 8, 1984, 129-134.) NIST Spectra nist ri
      1660 (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: 125406; 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
      1703.4 (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: 125406; 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
      1680 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 12 m; Column type: Capillary; Heat rate: 20 K/min; Start T: 50 C; End T: 300 C; End time: 3 min; Start time: 1 min; CAS no: 125406; Active phase: 5 % Phenyl methyl siloxane; Carrier gas: He; Phase thickness: 0.33 um; Data type: Linear RI; Authors: Newton, B.; Foery, R.F., Retention indices and dual capillary gas chromatography for rapid identification of sedative hypnotic drugs in emergency toxicology, J. Anal. Toxicol., 8, 1984, 129-134.) NIST Spectra nist ri

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

Density: 1.3±0.1 g/cm3
Boiling Point: 354.9±25.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.8 mmHg at 25°C
Enthalpy of Vaporization: 69.5±6.0 kJ/mol
Flash Point: 168.4±23.2 °C
Index of Refraction: 1.560
Molar Refractivity: 54.7±0.5 cm3
#H bond acceptors: 5
#H bond donors: 2
#Freely Rotating Bonds: 3
#Rule of 5 Violations: 0
ACD/LogP: 1.26
ACD/LogD (pH 5.5): -0.52
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 2.80
ACD/LogD (pH 7.4): -3.09
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.00
Polar Surface Area: 82 Å2
Polarizability: 21.7±0.5 10-24cm3
Surface Tension: 43.6±7.0 dyne/cm
Molar Volume: 169.1±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) =  1.51
    Log Kow (Exper. database match) =  1.65
       Exper. Ref:  Wong,O & McKeown,RH (1988)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  524.06  (Adapted Stein & Brown method)
    Melting Pt (deg C):  223.84  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  2.34E-010  (Modified Grain method)
    MP  (exp database):  166.5 deg C
    Subcooled liquid VP: 6.72E-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):  1474
       log Kow used: 1.65 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  2179.9 mg/L

 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]:  4.434E-014 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.65  (exp database)
  Log Kaw used:  -10.585  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  12.235
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.4626
   Biowin2 (Non-Linear Model)     :   0.1508
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.5180  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.3881  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.1977
   Biowin6 (MITI Non-Linear Model):   0.0843
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.1493
 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):  8.96E-007 Pa (6.72E-009 mm Hg)
  Log Koa (Koawin est  ): 12.235
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.35 
       Octanol/air (Koa) model:  0.422 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.992 
       Mackay model           :  0.996 
       Octanol/air (Koa) model:  0.971 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  16.5994 E-12 cm3/molecule-sec
      Half-Life =     0.644 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     7.732 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.994 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  62.03
      Log Koc:  1.793 

 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 = 0.570 (BCF = 3.72)
       log Kow used: 1.65 (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:               2.03  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.93  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       0.000295        15.5         1000       
   Water     29.9            900          1000       
   Soil      70              1.8e+003     1000       
   Sediment  0.0832          8.1e+003     0          
     Persistence Time: 1.25e+003 hr

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