ChemSpider 2D Image | 2-ACETYL-5-METHYLPYRAZINE | C7H8N2O

2-ACETYL-5-METHYLPYRAZINE

  • Molecular FormulaC7H8N2O
  • Average mass136.151 Da
  • Monoisotopic mass136.063660 Da
  • ChemSpider ID28683

More details:






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

1-(5-Methyl-2-pyrazinyl)-1-ethanone
1-(5-Methyl-2-pyrazinyl)ethanon [German] [ACD/IUPAC Name]
1-(5-Methyl-2-pyrazinyl)ethanone [ACD/IUPAC Name]
1-(5-Méthyl-2-pyrazinyl)éthanone [French] [ACD/IUPAC Name]
1-(5-methylpyrazin-2-yl)ethanone
2-ACETYL-5-METHYLPYRAZINE
Ethanone, 1-(5-methyl-2-pyrazinyl)- [ACD/Index Name]
[22047-27-4]
1-(5-Methyl-2-pyranizyl)-1-ethanone
1-(5-methyl-2-pyrazinyl)-Ethanone
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  • Experimental Physico-chemical Properties
  • Gas Chromatography
    • Retention Index (Kovats):

      1130 (estimated with error: 89) NIST Spectra mainlib_108948
    • Retention Index (Normal Alkane):

      1080 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 30 C; End T: 200 C; End time: 20 min; Start time: 25 min; CAS no: 22047274; Active phase: DB-1; Data type: Normal alkane RI; Authors: Buttery, R.G.; Ling, L.C.; Stern, D.J., Studies on popcorn aroma and flavor volatiles, J. Agric. Food Chem., 45, 1997, 837-843., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 30 C; End T: 200 C; End time: 30 min; Start time: 25 min; CAS no: 22047274; Active phase: DB-1; Data type: Normal alkane RI; Authors: Buttery, R.G.; Orts, W.J.; Takeoka, G.R.; Nam, Y., Volatile flavor components of rice cakes, J. Agric. Food Chem., 47, 1999, 4353-4356.) NIST Spectra nist ri
      1093 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 80 C; End T: 200 C; CAS no: 22047274; Active phase: OV-101; Carrier gas: N2; Data type: Normal alkane RI; Authors: Mihara, S.; Enomoto, N., Calculation of retention indices of pyrazines on the basis of molecular structure, J. Chromatogr., 324, 1985, 428-430., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 80 C; End T: 200 C; CAS no: 22047274; Active phase: OV-101; Carrier gas: N2; Data type: Normal alkane RI; Authors: Mihara, S.; Masuda, H., Correlation between molecular structures and retention indices of pyrazines, J. Chromatogr., 402, 1987, 309-317., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 80 C; End T: 200 C; CAS no: 22047274; Active phase: OV-101; Data type: Normal alkane RI; Authors: Mihara, S.; Masuda, H., Structure-odor relationships for disubstituted pyrazines, J. Agric. Food Chem., 36(6), 1988, 1242-1247.) NIST Spectra nist ri
      1099.5 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.03 in; Column length: 1000 ft; Column type: Capillary; Heat rate: 4 K/min; Start T: 80 C; End T: 225 C; Start time: 5 min; CAS no: 22047274; Active phase: SF-96; Data type: Normal alkane RI; Authors: Mussinan, C.J.; Walradt, J.P., Volatile constituents of pressure cooked pork liver, J. Agric. Food Chem., 22(5), 1974, 827-831.) NIST Spectra nist ri
      1714 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 230 C; Start time: 8 min; CAS no: 22047274; Active phase: TC-Wax; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Ishikawa, M.; Ito, O.; Ishizaki, S.; Kurobayashi, Y.; Fujita, A., Solid-phase aroma concentrate extraction (SPACE ): a new headspace technique for more sensitive analysis of volatiles, Flavour Fragr. J., 19, 2004, 183-187.) NIST Spectra nist ri
      1723 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 190 C; Start time: 6 min; CAS no: 22047274; Active phase: HP-Wax; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Sanz, C.; Ansorena, D.; Bello, J.; Cid, C., Optimizing headspace temperature and time sampling for identification of volatile compounds in ground roasted Arabica coffee, J. Agric. Food Chem., 49, 2001, 1364-1369., Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 190 C; Start time: 6 min; CAS no: 22047274; Active phase: HP-Wax; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Sanz, C.; Maeztu, L.; Zapelena, M.J.; Bello, J.; Cid, C., Profiles of volatile compounds and sensory analysis of three blends of coffee: influence of different proportions of Arabica and Robusta and influence of roasting coffee with sugar, J. Sci. Food Agric., 82, 2002, 840-847.) NIST Spectra nist ri
      1673.3 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.03 in; Column length: 500 ft; Column type: Capillary; Heat rate: 2 K/min; Start T: 60 C; End T: 190 C; Start time: 2 min; CAS no: 22047274; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Kinlin, T.E.; Muralidhara, R.; Pittet, A.O.; Sanderson, A.; Walradt, J.P., Volatile components of roasted filberts, J. Agric. Food Chem., 20(5), 1972, 1021-1028.) NIST Spectra nist ri
    • Retention Index (Linear):

      1088 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 40 C; End T: 260 C; End time: 40 min; CAS no: 22047274; Active phase: DB-1; Carrier gas: He; Phase thickness: 1.05 um; Data type: Linear RI; Authors: Izzo, H.V.; Ho, C.-T., Isolation and identification of the volatile components of an extruded autolyzed yeast extract, J. Agric. Food Chem., 39, 1991, 2245-2248., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 50 C; End T: 240 C; CAS no: 22047274; Active phase: SE-30; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Misharina, T.A.; Golovnya, R.V.; Yakovleva, V.N.; Vitt, S.V., Pyrazines formed in model glycerin-water systems, Russ. Chem. Bull. (Engl. Transl.), 40(9), 1991, 1742-1748, In original 1972-1979.) NIST Spectra nist ri
      1679 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 250 C; End time: 15 min; Start time: 5 min; CAS no: 22047274; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Pozo-Bayon M.A.; Ruiz-Rodriguez A.; Pernin K.; Cayot N., Influence of eggs on the aroma composition of a sponge cake and on the aroma release in model studies on flavored sponge cakes, J. Agric. Food Chem., 55, 2007, 1418-1426.) 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: 229.3±35.0 °C at 760 mmHg
Vapour Pressure: 0.1±0.5 mmHg at 25°C
Enthalpy of Vaporization: 46.6±3.0 kJ/mol
Flash Point: 95.2±32.4 °C
Index of Refraction: 1.515
Molar Refractivity: 37.3±0.3 cm3
#H bond acceptors: 3
#H bond donors: 0
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 0.62
ACD/LogD (pH 5.5): 0.38
ACD/BCF (pH 5.5): 1.14
ACD/KOC (pH 5.5): 38.23
ACD/LogD (pH 7.4): 0.38
ACD/BCF (pH 7.4): 1.14
ACD/KOC (pH 7.4): 38.23
Polar Surface Area: 43 Å2
Polarizability: 14.8±0.5 10-24cm3
Surface Tension: 43.9±3.0 dyne/cm
Molar Volume: 123.7±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) =  0.17

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  227.57  (Adapted Stein & Brown method)
    Melting Pt (deg C):  46.27  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.0533  (Modified Grain method)
    Subcooled liquid VP: 0.0834 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):  6.241e+004
       log Kow used: 0.17 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  8.2221e+005 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   5.86E-009  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.530E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.17  (KowWin est)
  Log Kaw used:  -6.621  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  6.791
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7442
   Biowin2 (Non-Linear Model)     :   0.7684
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8010  (weeks       )
   Biowin4 (Primary Survey Model) :   3.5605  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4831
   Biowin6 (MITI Non-Linear Model):   0.4988
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.1980
 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):  11.1 Pa (0.0834 mm Hg)
  Log Koa (Koawin est  ): 6.791
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  2.7E-007 
       Octanol/air (Koa) model:  1.52E-006 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  9.74E-006 
       Mackay model           :  2.16E-005 
       Octanol/air (Koa) model:  0.000121 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.7854 E-12 cm3/molecule-sec
      Half-Life =    13.619 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.57E-005 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  10
      Log Koc:  1.000 

 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 = 0.500 (BCF = 3.162)
       log Kow used: 0.17 (estimated)

 Volatilization from Water:
    Henry LC:  5.86E-009 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 1.166E+005  hours   (4858 days)
    Half-Life from Model Lake : 1.272E+006  hours   (5.3E+004 days)

 Removal In Wastewater Treatment:
    Total removal:               1.85  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  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       0.135           327          1000       
   Water     38.4            360          1000       
   Soil      61.4            720          1000       
   Sediment  0.0711          3.24e+003    0          
     Persistence Time: 578 hr




                    

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