cyclobarbital C12H16N2O3 structure – Flashcards

Flashcard maker : Linda Lynch

Molecular Formula C12H16N2O3
Average mass 236.267 Da
Density 1.2±0.1 g/cm3
Boiling Point
Flash Point
Molar Refractivity 60.1±0.3 cm3
Polarizability 23.8±0.5 10-24cm3
Surface Tension 44.2±3.0 dyne/cm
Molar Volume 195.4±3.0 cm3
  • Experimental data
  • Predicted – ACD/Labs
  • Predicted – EPISuite
  • Predicted – ChemAxon
  • Experimental Physico-chemical Properties
    • Experimental Melting Point:

      172.5 °C Jean-Claude Bradley Open Melting Point Dataset 17285
      173 °C Jean-Claude Bradley Open Melting Point Dataset 21417
  • Gas Chromatography
    • Retention Index (Kovats):

      2022 (estimated with error: 89) NIST Spectra mainlib_231559, replib_379327, replib_246347, replib_42309, replib_246338
      1970 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; Start T: 200 C; CAS no: 52313; 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: 52313; 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., 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: 52313; 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
      1947 (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: 52313; 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: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.53 mm; Column length: 30 m; Column type: Capillary; Start T: 200 C; CAS no: 52313; Active phase: DB-1; Carrier gas: N2; Phase thickness: 1.5 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
      1955 (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: 52313; 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
      1973 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.20 mm; Column length: 25 m; Column type: Capillary; Start T: 250 C; CAS no: 52313; Active phase: SPB-1; Carrier gas: He; Data type: Kovats RI; Authors: Lora-Tamayo, C.; Rams, M.A.; Chacon, J.M.R., Gas Chromatographic Data for 187 Nitrogen- or Phosphorus-Containing Drugs and Metabolites of Toxicological Interest Analysed on Methyl Silicone Capillary Columns, J. Chromatogr., 374, 1986, 73-85.) NIST Spectra nist ri
      1950 (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: 52313; 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
      1952 (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: 52313; 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
      1945 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 52313; 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
      1980 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; CAS no: 52313; 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: 52313; 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
      1953 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 200 C; CAS no: 52313; 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
      1963 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 180 C; CAS no: 52313; 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
      1960 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; Start T: 200 C; CAS no: 52313; 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
      1985 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; CAS no: 52313; 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.) NIST Spectra nist ri
    • Retention Index (Normal Alkane):

      1946 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; Start T: 100 C; End T: 300 C; CAS no: 52313; Active phase: BP-1; Data type: Normal alkane RI; Authors: MHA, Directorate of ForensicScience., Forensic Toxicology, 9999.) NIST Spectra nist ri
      1970 (Program type: Complex; Column… (show more) class: Standard non-polar; Column diameter: 0.53 mm; Column length: 10 m; Column type: Capillary; Description: 100 0C (2 min) ^ 20 0C/min -> 180 0C ^ 7.5 0C/min -> 280 0C (6 min); CAS no: 52313; Active phase: CP Sil 5 CB; Phase thickness: 5.2 um; Data type: Normal alkane RI; Authors: Bogusz, M.; Bialka, J.; Gierz, J.; Klys, M., Use of short, wide-bore capillary columns in GC toxicological screening, J. Anal. Toxicol., 10(4), 1986, 135-138., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 52313; Active phase: HP-1; Carrier gas: Helium; Data type: Normal alkane RI; Authors: Grigor’ev, A.M.; Bozhko, E.S.; Rudakova, L.V., Use of correlation between retention indices on low-polarity phases for screening comp-lex mixtures by gas chromatography-mass spectrometry, Rus. J. Anal. Chem., 64(2), 2009, 140-143, In original 156-159.) NIST Spectra nist ri
      1960 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 10 m; Column type: Capillary; CAS no: 52313; Active phase: CP Sil 5 CB; Phase thickness: 5.2 um; Data type: Normal alkane RI; Authors: Bogusz, M.; Bialka, J.; Gierz, J.; Klys, M., Use of short, wide-bore capillary columns in GC toxicological screening, J. Anal. Toxicol., 10(4), 1986, 135-138.) NIST Spectra nist ri
      1940 (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: 52313; 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
      1963 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Other; CAS no: 52313; 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
      1950 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 6 ft; Column type: Packed; Start T: 200 C; CAS no: 52313; Active phase: OV-101; Carrier gas: N2; Substrate: Chromosorb G AW DMCS (80-100 mesh); Data type: Normal alkane 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
      1932.8 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.34 mm; Column length: 18 m; Column type: Capillary; Heat rate: 25 K/min; Start T: 100 C; End T: 275 C; End time: 5 min; Start time: 2 min; CAS no: 52313; Active phase: CP Sil 8 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: de Baere, S.M.; Lambert, W.E.; van Bocxlaer, J.F.; de Leenheer, A.P., Quantitative gas chromatographic analysis of 3-cyano-3,3-diphenylpropionic acid, the acidic metabolite of bezitramide (Burgodin), in urine, J. Anal. Toxicol., 20, 1996, 159-164.) NIST Spectra nist ri
      1988.1 (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: 52313; 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
    • Retention Index (Linear):

      1963 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 10 m; Column type: Capillary; CAS no: 52313; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 5.0 um; Data type: Linear RI; Authors: Aderjan, R.; Bogusz, M., Nitroalkanes as a multidetector retention index scale for drug identification in gas chromatography, J. Chromatogr., 454, 1988, 345-351.) NIST Spectra nist ri
      1967 (Program type: Complex; Column… (show more) class: Standard non-polar; Column diameter: 0.53 mm; Column length: 10 m; Column type: Capillary; Description: 100 0C (2 min ) ^ 15 0C/min -; 200 0C ^ 10 0C/min -; 300 0C (8 min hold); CAS no: 52313; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 5.0 um; Data type: Linear RI; Authors: Aderjan, R.; Bogusz, M., Nitroalkanes as a multidetector retention index scale for drug identification in gas chromatography, J. Chromatogr., 454, 1988, 345-351.) NIST Spectra nist ri
      1936 (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: 52313; 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

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: 1.527
Molar Refractivity: 60.1±0.3 cm3
#H bond acceptors: 5
#H bond donors: 2
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: 1.62
ACD/LogD (pH 5.5): 1.67
ACD/BCF (pH 5.5): 10.87
ACD/KOC (pH 5.5): 191.86
ACD/LogD (pH 7.4): 1.58
ACD/BCF (pH 7.4): 8.84
ACD/KOC (pH 7.4): 156.09
Polar Surface Area: 75 Å2
Polarizability: 23.8±0.5 10-24cm3
Surface Tension: 44.2±3.0 dyne/cm
Molar Volume: 195.4±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) = 2.30
 Log Kow (Exper. database match) = 1.77
 Exper. Ref: Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 563.32 (Adapted Stein & Brown method)
 Melting Pt (deg C): 242.18 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 1.94E-011 (Modified Grain method)
 MP (exp database): 173 deg C
 Subcooled liquid VP: 6.61E-010 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): 866.5
 log Kow used: 1.77 (expkow database)
 no-melting pt equation used
 Water Sol (Exper. database match) = 1600 mg/L (25 deg C)
 Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 1097.8 mg/L
 Wat Sol (Exper. database match) = 1600.00
 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 : 5.13E-013 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 6.960E-015 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.77 (exp database)
 Log Kaw used: -10.678 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 12.448
 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) : 0.2118
 Biowin6 (MITI Non-Linear Model): 0.0778
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): -0.1053
 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): 8.81E-008 Pa (6.61E-010 mm Hg)
 Log Koa (Koawin est ): 12.448
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 34 
 Octanol/air (Koa) model: 0.689 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 0.999 
 Mackay model : 1 
 Octanol/air (Koa) model: 0.982 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 97.8336 E-12 cm3/molecule-sec
 Half-Life = 0.109 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 1.312 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): 0.999 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 245.6
 Log Koc: 2.390 

 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 = 0.663 (BCF = 4.602)
 log Kow used: 1.77 (expkow database)

 Volatilization from Water:
 Henry LC: 5.13E-013 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 1.754E+009 hours (7.31E+007 days)
 Half-Life from Model Lake : 1.914E+010 hours (7.974E+008 days)

 Removal In Wastewater Treatment:
 Total removal: 2.08 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.99 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 0.00174 1.54 1000 
 Water 27.6 900 1000 
 Soil 72.3 1.8e+003 1000 
 Sediment 0.0844 8.1e+003 0 
 Persistence Time: 1.29e+003 hr




 

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