ChemSpider 2D Image | 3306 | C8H10N2

3306

  • Molecular FormulaC8H10N2
  • Average mass134.178 Da
  • Monoisotopic mass134.084396 Da
  • ChemSpider ID29734

More details:






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

23747-48-0 [RN]
245-864-1 [EINECS]
3306
5H-Cyclopenta[b]pyrazine, 6,7-dihydro-5-methyl- [ACD/Index Name]
5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazin [German] [ACD/IUPAC Name]
5-methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine [ACD/IUPAC Name]
5-Méthyl-6,7-dihydro-5H-cyclopenta[b]pyrazine [French] [ACD/IUPAC Name]
5-METHYL-6,7-DIHYDRO-5H-CYCLOPENTYLPYRAZINE
6,7-Dihydro-5-methyl-5H-cyclopenta[b]pyrazine
Maple lactone pyrazine
More...

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

L5IDR3PHAV [DBID]
UNII:L5IDR3PHAV [DBID]
FEMA No. 3306 [DBID]
W330604_ALDRICH [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
  • Gas Chromatography
    • Retention Index (Kovats):

      1095 (estimated with error: 83) NIST Spectra mainlib_237290, replib_249438
    • Retention Index (Normal Alkane):

      1110 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 10 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 35 C; End T: 225 C; Start time: 3 min; CAS no: 23747480; Active phase: OV-101; Carrier gas: Helium; Phase thickness: 0.52 um; Data type: Normal alkane RI; Authors: Deibler, K.D.; Acree, T.E.; Lavin, E.H., Aroma analysis of coffrr brew by gas chromatography-oldfactometry, Developments in Food Sci., 40, 1998, 69-78.) NIST Spectra nist ri
      1103 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 35 C; End T: 250 C; CAS no: 23747480; Active phase: HP-1; Data type: Normal alkane RI; Authors: Ong, P.K.C.; Acree, T.E., Gas chromatography/olfactory analysis of lychee (Litchi chinesis Sonn.), J. Agric. Food Chem., 46(6), 1998, 2282-2286.) NIST Spectra nist ri
      1100 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.2 mm; Column length: 25 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 50 C; End T: 200 C; End time: 15 min; CAS no: 23747480; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Lorenz, G.; Stern, D.J.; Flath, R.A.; Haddon, W.F.; Tillin, S.J.; Teranishi, R., Identification of sheep liver volatiles, J. Agric. Food Chem., 31, 1983, 1052-1057.) NIST Spectra nist ri
      1112.7 (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: 23747480; 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
      1139 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.18 mm; Column length: 10 m; Column type: Capillary; CAS no: 23747480; Active phase: SLB-5MS; Carrier gas: Helium; Phase thickness: 0.18 um; Data type: Normal alkane RI; Authors: Risticevic, S.; Carasek, E.; Pawliszyn, J., Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee, Anal. Chim. Acta, 617, 2008, 72-84.) NIST Spectra nist ri
      1149 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.18 mm; Column length: 10 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 295 C; Start time: 1.5 min; CAS no: 23747480; Active phase: SLB-5MS; Carrier gas: Helium; Phase thickness: 0.18 um; Data type: Normal alkane RI; Authors: Risticevic, S.; Carasek, E.; Pawliszyn, J., Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee, Anal. Chim. Acta, 617, 2008, 72-84.) NIST Spectra nist ri
      1147 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50C(2min) =>20C/min =>80C (1min) =>20C/min =>100C(1min) =>30C/min =>230C(3min); CAS no: 23747480; Active phase: HP-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Ho, C.W.; Wan Aida, W.M.; Maskat, M.Y.; Osman, H., Changes in volatile compounds of palm sap (Arenga pinnata) during the heating process for production of palm sugar, Food Chem., 102, 2007, 1156-1162.) NIST Spectra nist ri
      1643 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 35 C; End T: 320 C; End time: 45 min; Start time: 5 min; CAS no: 23747480; Active phase: FFAP; Carrier gas: N2; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Nebesny, E.; Budryn, G.; Kula, J.; Majda, T., The effect of roasting method on headspace composition of robusta coffee bean aroma, Eur. Food Res. Technol., 225, 2007, 9-19.) NIST Spectra nist ri
      1630 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; CAS no: 23747480; Active phase: HP-Innowax; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Viegas, M.C.; Bassoli, D.G., Utilizacao do indice de retencao linear para caracterizacao de compostos volateis em cafe soluvel utilizando GC-MS e coluna HP-Innowax, Quim. Nova, 30(8), 2007, 2031-2034.) NIST Spectra nist ri
      1636 (Program type: Complex; Column... (show more) class: Standard polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Description: 40 0C (5 min) ^ 4 0C/min -> 60 0C (5 min) ^ 8 0C/min -> 250 0C (3 min); CAS no: 23747480; Active phase: HP-Innowax; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Viegas, M.C.; Bassoli, D.G., Utilizacao do indice de retencao linear para caracterizacao de compostos volateis em cafe soluvel utilizando GC-MS e coluna HP-Innowax, Quim. Nova, 30(8), 2007, 2031-2034.) NIST Spectra nist ri
      1596 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 40 C; End T: 230 C; End time: 20 min; CAS no: 23747480; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Akiyama, M.; Murakami, K.; Ohtani, N.; Iwatsuki, K.; Sotoyama, K.; Wada, A.; Tokuno, K.; Iwabuchi, H.; Tanaka, K., Analysis of volatile compounds released during the grinding of roasted coffee beans using solid-phase microextraction, J. Agric. Food Chem., 51, 2003, 1961-1969.) NIST Spectra nist ri
      1667 (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: 23747480; 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: 23747480; 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
      1594 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 35 C; End T: 250 C; CAS no: 23747480; Active phase: HP-Innowax; Data type: Normal alkane RI; Authors: Ong, P.K.C.; Acree, T.E., Gas chromatography/olfactory analysis of lychee (Litchi chinesis Sonn.), J. Agric. Food Chem., 46(6), 1998, 2282-2286.) NIST Spectra nist ri
      1605 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 70 C; End T: 160 C; Start time: 8 min; CAS no: 23747480; Active phase: DB-Wax; Carrier gas: He; Data type: Normal alkane RI; Authors: Wong, J.M.; Bernhard, R.A., Effect of nitrogen source on pyrazine formation, J. Agric. Food Chem., 36(1), 1988, 123-129.) NIST Spectra nist ri
      1603 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column length: 3 m; Column type: Packed; Heat rate: 4 K/min; Start T: 60 C; End T: 180 C; CAS no: 23747480; Active phase: Carbowax; Carrier gas: He; Substrate: Chromosorb G AW DMCS; Data type: Normal alkane RI; Authors: Schieberle, P.; Grosch, W., Identifizierung von Aromastoffen aus der Kruste von Roggenbrot, Z. Lebensm. Unters. Forsch., 177(3), 1983, 173-180.) NIST Spectra nist ri
      1623.2 (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: 23747480; 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):

      1111 (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: 2 K/min; Start T: 40 C; End T: 220 C; Start time: 5 min; CAS no: 23747480; Active phase: DB-1; Carrier gas: He; Phase thickness: 1 um; Data type: Linear RI; Authors: Kim, J.S., Einfluss der Temperatur beim Rosten von Sesam auf Aroma und antioxidative Eigenschaften des Ols, PhD Thesis, Technischen Universitat Berlin zur Erlangung des akademischen Grades, Berlin, 2001, 151.) NIST Spectra nist ri
      1113 (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: 220 C; End time: 30 min; CAS no: 23747480; Active phase: HP-1; Phase thickness: 1.5 um; Data type: Linear RI; Authors: Zhang, Y.; Dorjpalam, B.; Ho, C.-T., Contribution of peptides to volatile formation in the Maillard reaction of casein hydrolysate with glucose, J. Agric. Food Chem., 40, 1992, 2467-2471.) NIST Spectra nist ri
      1106 (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: 23747480; 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
      1158 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 60 C; End T: 250 C; End time: 10 min; Start time: 5 min; CAS no: 23747480; Active phase: BPX-5; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Ames, J.M.; Guy, R.C.E.; Kipping, G.J., Effect of pH and temperature on the formation of volatile compounds in cysteine/reducing sugar/starch mixtures during extrusion cooking, J. Agric. Food Chem., 49, 2001, 1885-1894.) NIST Spectra nist ri
      1163 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 60 C; End T: 250 C; End time: 10 min; Start time: 5 min; CAS no: 23747480; Active phase: BPX-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Ames, J.M.; Guy, R.C.E.; Kipping, G.J., Effect of pH, temperature, and moisture on the formation of volatile compounds in glycine/glucose model systems, J. Agric. Food Chem., 49, 2001, 4315-4323.) NIST Spectra nist ri
      1157 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.325 mm; Column length: 50 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 50 C; End T: 250 C; End time: 10 min; Start time: 2 min; CAS no: 23747480; Active phase: BPX-5; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Ames, J.M.; Defaye, A.B.; Bates, L., The effect of pH on the volatiles formed in an extruded starch-glucose-lysine model system, Food Chem., 58(4), 1997, 323-327.) NIST Spectra nist ri
      1616 (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: 40 C; End T: 200 C; End time: 30 min; Start time: 5 min; CAS no: 23747480; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Kim, J.S., Einfluss der Temperatur beim Rosten von Sesam auf Aroma und antioxidative Eigenschaften des Ols, PhD Thesis, Technischen Universitat Berlin zur Erlangung des akademischen Grades, Berlin, 2001, 151.) 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: 209.6±35.0 °C at 760 mmHg
Vapour Pressure: 0.3±0.4 mmHg at 25°C
Enthalpy of Vaporization: 42.8±3.0 kJ/mol
Flash Point: 78.9±0.0 °C
Index of Refraction: 1.542
Molar Refractivity: 39.3±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: 1.33
ACD/LogD (pH 5.5): 1.52
ACD/BCF (pH 5.5): 8.38
ACD/KOC (pH 5.5): 159.38
ACD/LogD (pH 7.4): 1.52
ACD/BCF (pH 7.4): 8.38
ACD/KOC (pH 7.4): 159.45
Polar Surface Area: 26 Å2
Polarizability: 15.6±0.5 10-24cm3
Surface Tension: 43.6±3.0 dyne/cm
Molar Volume: 125.0±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) =  1.83

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  212.71  (Adapted Stein & Brown method)
    Melting Pt (deg C):  34.58  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.144  (Modified Grain method)
    Subcooled liquid VP: 0.176 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):  2416
       log Kow used: 1.83 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  10948 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.76E-006  atm-m3/mole
   Group Method:   3.46E-009  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  1.052E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.83  (KowWin est)
  Log Kaw used:  -3.948  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  5.778
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7930
   Biowin2 (Non-Linear Model)     :   0.9053
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.7529  (weeks       )
   Biowin4 (Primary Survey Model) :   3.5171  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2841
   Biowin6 (MITI Non-Linear Model):   0.3287
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.2425
 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):  23.5 Pa (0.176 mm Hg)
  Log Koa (Koawin est  ): 5.778
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.28E-007 
       Octanol/air (Koa) model:  1.47E-007 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  4.62E-006 
       Mackay model           :  1.02E-005 
       Octanol/air (Koa) model:  1.18E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   4.0218 E-12 cm3/molecule-sec
      Half-Life =     2.660 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =    31.914 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 7.42E-006 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  178.5
      Log Koc:  2.252 

 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 = 0.710 (BCF = 5.128)
       log Kow used: 1.83 (estimated)

 Volatilization from Water:
    Henry LC:  2.76E-006 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      246.9  hours   (10.29 days)
    Half-Life from Model Lake :       2791  hours   (116.3 days)

 Removal In Wastewater Treatment:
    Total removal:               2.27  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     2.02  percent
    Total to Air:                0.16  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       3.72            63.8         1000       
   Water     32.7            360          1000       
   Soil      63.4            720          1000       
   Sediment  0.0978          3.24e+003    0          
     Persistence Time: 427 hr




                    

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