ChemSpider 2D Image | 2-Isopropyl-5-methylpyrazine | C8H12N2

2-Isopropyl-5-methylpyrazine

  • Molecular FormulaC8H12N2
  • Average mass136.194 Da
  • Monoisotopic mass136.100052 Da
  • ChemSpider ID55603

More details:






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

13925-05-8 [RN]
2-Isopropyl-5-methylpyrazin [German] [ACD/IUPAC Name]
2-Isopropyl-5-methylpyrazine [ACD/IUPAC Name]
2-Isopropyl-5-méthylpyrazine [French] [ACD/IUPAC Name]
2-Methyl-5-(1-methylethyl)pyrazine
Pyrazine, 2-methyl-5-(1-methylethyl)- [ACD/Index Name]
T6N DNJ BY1&1 E1 [WLN]
FEMA 3554
http:////www.amadischem.com/proen/470800/
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

818RIW504V [DBID]
FEMA No. 3554 [DBID]
UNII:818RIW504V [DBID]
UNII-818RIW504V [DBID]
  • Experimental Physico-chemical Properties
  • Gas Chromatography
    • Retention Index (Kovats):

      1029 (estimated with error: 83) NIST Spectra mainlib_3375
    • Retention Index (Normal Alkane):

      1037.6 (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: 3 K/min; Start T: 100 C; End T: 280 C; End time: 2 min; Start time: 2 min; CAS no: 13925058; Active phase: CP Sil 5 CB; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Beck, H.C.; Hansen, A.M.; Lauritsen, F.R., Novel pyrazine metabolites found in polymyxin biosynthesis by Paenibacillus polymyxa, FEMS Microbiol. Lett., 220, 2003, 67-73.) NIST Spectra nist ri
      1044 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 35 C; End T: 200 C; Start time: 1 min; CAS no: 13925058; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Robacker, D.C.; Bartelt, R.J., Chemicals attractive to Mexican fruit fly from Klebsiella pneumoniae and Citrobacter freundii cultures sampled by solid-phase microextraction MICROEXTRACTION, J. Chem. Ecol., 23(12), 1997, 2897-2915.) NIST Spectra nist ri
      1038.3 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column length: 8 ft; Column type: Packed; Heat rate: 2.1 K/min; Start T: 57 C; End T: 224 C; CAS no: 13925058; Active phase: SE-30; Carrier gas: He; Substrate: Chromosorb W (60-80 mesh); Data type: Normal alkane RI; Authors: Bondarovich, H.A.; Friedel, P.; Krampl, V.; Renner, J.A.; Shephard, F.W.; Gianturco, M.A., Volatile constituents of coffee. Pyrazines and other compounds, J. Agric. Food Chem., 15(6), 1967, 1093-1099.) NIST Spectra nist ri
      1396 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 50 C; End T: 230 C; CAS no: 13925058; Active phase: TC-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Fukami, K.; Ishiyama, S.; Yaguramaki, H.; Masuzawa, T.; Nabeta, Y.; Endo, K.; Shimoda, M., Identification of distinctive volatile compounds in fish sauce, J. Agric. Food Chem., 50, 2002, 5412-5416.) NIST Spectra nist ri
      1446.5 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 220 C; CAS no: 13925058; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Hashim, L.; Hudiyono, S.; Chaveron, H., Volatile compounds of oxidized cocoa butter, Food Res. Int., 30(3/4), 1997, 163-169.) NIST Spectra nist ri
      1424.3 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column length: 13 ft; Column type: Packed; Heat rate: 2.1 K/min; Start T: 75 C; End T: 224 C; CAS no: 13925058; Active phase: Carbowax 20M; Carrier gas: He; Substrate: Diatoport S (60-80 mesh); Data type: Normal alkane RI; Authors: Bondarovich, H.A.; Friedel, P.; Krampl, V.; Renner, J.A.; Shephard, F.W.; Gianturco, M.A., Volatile constituents of coffee. Pyrazines and other compounds, J. Agric. Food Chem., 15(6), 1967, 1093-1099.) NIST Spectra nist ri
    • Retention Index (Linear):

      1028 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.248 mm; Column length: 30 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 250 C; Start time: 5 min; CAS no: 13925058; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: DeMilo, A.B.; Lee, C.-J.; Moreno, D.S.; Martinez, A.J., Identification of volatiles derived from Citrobacter freundii fermentation of a trypticase soy broth, J. Agric. Food Chem., 44, 1996, 607-612.) NIST Spectra nist ri
      1029 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.248 mm; Column length: 30 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 250 C; Start time: 5 min; CAS no: 13925058; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: DeMilo, A.B.; Lee, C.-J.; Moreno, D.S.; Martinez, A.J., Identification of volatiles derived from Citrobacter freundii fermentation of a trypticase soy broth, J. Agric. Food Chem., 44, 1996, 607-612.) NIST Spectra nist ri
      1031 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 250 C; Start time: 5 min; CAS no: 13925058; Active phase: SPB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Lee, C.-J.; DeMilo, A.B.; Moreno, D.S.; Martinez, A.J., Analysis of the volatile components of a bacterial fermentation that is attractive to the Mexican fruit fly, Anastrepha ludens, J. Agric. Food Chem., 43, 1995, 1348-1351.) NIST Spectra nist ri
      1059 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 25 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 40 C; End T: 280 C; End time: 5 min; CAS no: 13925058; Active phase: HP-5; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Solina, M.; Baumgartner, P.; Johnson, R.L.; Whitfield, F.B., Volatile aroma components of soy protein isolate and acid-hydrolysed vegetable protein, Food Chem., 90, 2005, 861-873.) NIST Spectra nist ri
      1400 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 60 C; End T: 220 C; End time: 30 min; Start time: 5 min; CAS no: 13925058; Active phase: CP-Wax 52CB; Data type: Linear RI; Authors: Mahadevan, K.; Farmer, L., Key Odor Impact Compounds in Three Yeast Extract Pastes, J. Agric. Food Chem., 54, 2006, 7242-7250.) NIST Spectra nist ri
      1415 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 60 C; End T: 220 C; End time: 30 min; Start time: 5 min; CAS no: 13925058; Active phase: CP-Wax 52CB; Data type: Linear RI; Authors: Mahadevan, K.; Farmer, L., Key Odor Impact Compounds in Three Yeast Extract Pastes, J. Agric. Food Chem., 54, 2006, 7242-7250.) NIST Spectra nist ri
      1403 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 20C(30s) =>fast=>60C =>4C/min => 220C (20min); CAS no: 13925058; Active phase: DB-Wax; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Cantergiani, E.; Brevard, H.; Krebs, Y.; Feria-Morales, A.; Amado, R.; Yeretzian, C., Characterisation of the aroma of green Mexican coffee and identification of mouldy/earthy defect, Eur. Food Res. Technol., 212, 2001, 648-657.) NIST Spectra nist ri
      1409 (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: 50 C; End T: 230 C; CAS no: 13925058; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Shimoda, M.; Peralta, R.R.; Osajima, Y., Headspace gas analysis of fish sauce, J. Agric. Food Chem., 44, 1996, 3601-3605.) NIST Spectra nist ri

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

Density: 1.0±0.1 g/cm3
Boiling Point: 187.9±35.0 °C at 760 mmHg
Vapour Pressure: 0.9±0.3 mmHg at 25°C
Enthalpy of Vaporization: 40.7±3.0 kJ/mol
Flash Point: 70.7±15.9 °C
Index of Refraction: 1.495
Molar Refractivity: 41.4±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 1
#Rule of 5 Violations: 0
ACD/LogP: 1.52
ACD/LogD (pH 5.5): 1.58
ACD/BCF (pH 5.5): 9.37
ACD/KOC (pH 5.5): 172.69
ACD/LogD (pH 7.4): 1.58
ACD/BCF (pH 7.4): 9.38
ACD/KOC (pH 7.4): 172.76
Polar Surface Area: 26 Å2
Polarizability: 16.4±0.5 10-24cm3
Surface Tension: 35.9±3.0 dyne/cm
Molar Volume: 142.2±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) =  1.94

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  197.50  (Adapted Stein & Brown method)
    Melting Pt (deg C):  25.70  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.368  (Modified Grain method)
    Subcooled liquid VP: 0.373 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):  1901
       log Kow used: 1.94 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  11613 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   6.26E-006  atm-m3/mole
   Group Method:   2.74E-008  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  3.469E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.94  (KowWin est)
  Log Kaw used:  -3.592  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  5.532
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7920
   Biowin2 (Non-Linear Model)     :   0.9028
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.7485  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.5142  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3559
   Biowin6 (MITI Non-Linear Model):   0.3641
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.0329
 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):  49.7 Pa (0.373 mm Hg)
  Log Koa (Koawin est  ): 5.532
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  6.03E-008 
       Octanol/air (Koa) model:  8.36E-008 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  2.18E-006 
       Mackay model           :  4.83E-006 
       Octanol/air (Koa) model:  6.68E-006 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   3.1331 E-12 cm3/molecule-sec
      Half-Life =     3.414 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    40.966 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 3.5E-006 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  143.5
      Log Koc:  2.157 

 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 = 0.796 (BCF = 6.259)
       log Kow used: 1.94 (estimated)

 Volatilization from Water:
    Henry LC:  6.26E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      110.3  hours   (4.598 days)
    Half-Life from Model Lake :       1302  hours   (54.23 days)

 Removal In Wastewater Treatment:
    Total removal:               2.54  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     2.09  percent
    Total to Air:                0.35  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       2.52            81.9         1000       
   Water     31.7            900          1000       
   Soil      65.6            1.8e+003     1000       
   Sediment  0.114           8.1e+003     0          
     Persistence Time: 781 hr




                    

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