; Bello, J.; Cid, C., Characterization of espresso coffee aroma by static headspace GC-MS and sensory flavor profile, J. Agric. Food Chem., 54, 2006, 7242-7250. class: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Description: 45C(5min)=>10C/min =>80C=>2C/min=>240C; CAS no: 78933; Active phase: CP-Wax 52CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Verzera, A.; Ziino, M.; Condurso, C.; Romeo, V.; Zappala, M., Solid-phase microextraction and gas chromatography-mass spectrometry for rapid characterisation of semi-hard cheeses, Anal. Teil 1: Retentionsindices aliphatischer Halogenide, Alkohole, Aldehyde und Ketone, Helv. Food Chem., 32(1), 1984, 59-64. umn class: Standard polar; Column length: 2 m; Column type: Packed; Start T: 75 C; CAS no: 78933; Active phase: Carbowax 20M; Carrier gas: N2; Substrate: Kieselgur (60-100 mesh); Data type: Kovats RI; Authors: Goebel, K.-J., Gaschromatographische Identifizierung Niedrig Siedender Substanzen Mittels Retentionsindices und Rechnerhilfe, J. Food Microbiol., 85, 2003, 111-125. ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 280 C; Start time: 2 min; CAS no: 78933; Active phase: CP Sil 8 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Elmore, J.S. Evluation of aroma of pasteurized and UHT processed milk by aroma extract dilution analysis, Nippon Shokuhin Kagaku Kogaku Kaishi, 46(9), 1999, 587-597. 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; Start time: 2 min; CAS no: 78933; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Umano, K.; Nakahara, K.; Shoji, A.; Shibamoto, T., Aroma chemicals isolated and identified from leaves of aloe arborescens Mill. ; Tello, A.M.; Santiuste, J.M., Isothermal retention indices on poly (3,3,3-trifluoropropylmethylsiloxane) stationary phases, J. Chromatogr. . Microbiol., 30, 2000, 61-66. class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 40 m; Column type: Capillary; Description: 30 0C (1 min) ^ 15 0C/min -> 45 0C ^ 3 0C/min -> 120 0C; CAS no: 78933; Active phase: CP Sil 8 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Weller, J.-P.; Wolf, M., Massenspektroskopie und Headspace-GC, Beitr. ; Herve, C.; Richoux, R.; Lortal, S., Varied volatile compounds are produced by Propionibacterium freudenreichii in Emmental cheese, Food Chem., 87, 2004, 439-446. class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Description: 35C (3min)=>10C/min =>50C=> 4C/min =>200C => 50C/min =>250C (10min); CAS no: 78933; Active phase: RTX-5 MS; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Machiels, D.; Istasse, L., Evaluation of two commercial solid-phase microextraction fibres for the analysis of target aroma compounds in cooked beef meat, Talanta, 61, 2003, 529-537. ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 200 C; Start time: 5 min; CAS no: 78933; Active phase: SPB-5; Carrier gas: He; Phase thickness: 1.0 um; Data type: Normal alkane RI; Authors: Pinho, O.; Peres, C.; Ferreira, I.M.P.L.V.O., Solid-phase microextraction of volatile compounds in "Terrincho" ewe cheese. There are 6 isomers possible for the compounds having molecular formula C 4 . ; Kudryashov, S.Y. ; Floris, V.; Fayoux, S., Characterisation of the volatile profiles of infant formulas by proton transfer reaction-mass spectrometry and gas chromatography-mass spectrometry, Food Chem., 98, 2006, 343-350. ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 7 K/min; Start T: 40 C; End T: 250 C; End time: 5 min; Start time: 10 min; CAS no: 78933; Active phase: 5 % Phenyl methyl siloxane; Carrier gas: He; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Ramirez R.; Cava R., Volatile profiles of dry-cured meat products from three different Iberian x Duroc genotypes, J. Agric. Food Chem., 52, 2004, 7637-7643. class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Description: 40C(4min) =>2C/min => 90C => 4C/min => 130C =>8C/min => 250C; CAS no: 78933; Active phase: BPX-5; Carrier gas: He; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: van Ruth, S.M. Food Chem., 20(5), 1972, 1021-1028. ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 35 C; End T: 200 C; End time: 10 min; Start time: 10 min; CAS no: 78933; Active phase: Petrocol DH; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Censullo, A.C.; Jones, D.R. Statistical and thermodynamic verification of a 'kinetic' model, Acta Chromatogr., 12, 2002, 65-79. umn class: Semi-standard non-polar; Column length: 1 m; Column type: Packed; Start T: 200 C; CAS no: 78933; Active phase: Porapack Q; Carrier gas: H2; Data type: Kovats RI; Authors: Gawdzik, B.; Matynia, T., Characterization of methacrylic ester of p,p'-dihydroxydiphenylpropane diglicydyl ether - divinylbenzene porous copolymers for GC, Chromatographia, 38(9/10), 1994, 643-648. umn class: Semi-standard non-polar; Column length: 3.3 m; Column type: Packed; Start T: 130 C; CAS no: 78933; Active phase: C78, Branched paraffin; Substrate: Chromosorb G HP; Data type: Kovats RI; Authors: Reddy, K.S. Answer link Strategy and Solution First draw the functional group of an aldehyde and then add the remaining carbons. Solution: First draw the functional group of an aldehyde and add the remaining three carbons; these may be bonded in two ways. . Earth, 24(6), 1999, 729-732. ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 40 C; End T: 200 C; End time: 5 min; CAS no: 78933; Active phase: SPB-1; Phase thickness: 4 um; Data type: Normal alkane RI; Authors: de Lacy Costello, B.P.J. ; Boulanger, R.; Barel, M.; Guyot, B.; Guiraud, J.-P.; Schorr-Galindo, S., Impact of "ecological" post-harvest processing of coffee aroma: II Roasted coffee., J. Structure of 2-Butanone (C4H8O) Identification of 2-Butanone Chemical Compound Chemical Structure Description A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. ; Boulanger, R.; Barel, M.; Guyot, B.; Guiraud, J.-P.; Schorr-Galindo, S., Impact of "ecological" post-harvest processing of coffee aroma: II Roasted coffee., J. ; Fernandez, M.; Ordonez, J.A., Changes in selected biochemical and sensory parameters as affected by the superficial inoculation of Penicillium camemberti on dry fermented sausages, Int. ; Kowalska, T., Temperature dependence of Kovats indices in gas chromatography. ; Williams, J.; Beens, J.; Adahchour, M.; Vreuls, R.J.J. 2), 2003. umn class: Standard non-polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Start T: 398 K; CAS no: 78933; Active phase: DB-1; Carrier gas: He; Phase thickness: 1 um; Data type: Kovats RI; Authors: Ciazynska-Halarewicz, K.; Borucka, H.E. Dairy J., 11, 2001, 911-926. 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: 270 C; Start time: 1 min; CAS no: 78933; Active phase: DB-1; Carrier gas: He; Phase thickness: 5 um; Data type: Linear RI; Authors: Bartelt, R.J., Calibration of a commercial solid-phase microextraction device for measuring headspace concentrations of organic volatiles, Anal. This representation is a molecular formula. Statistical and thermodynamic verification of a 'kinetic' model, Acta Chromatogr., 12, 2002, 65-79. umn class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 30 m; Column type: Capillary; Start T: 373 K; CAS no: 78933; Active phase: DB-5; Carrier gas: He; Phase thickness: 1 um; Data type: Kovats RI; Authors: Ciazynska-Halarewicz, K.; Borucka, H.E. ; Mon, T.R., Volatile constituents of Amaranthus retroflexus L., J. Agric. Khim., 44(1), 1989, 68-73, In original 84-89. umn class: Semi-standard non-polar; Column diameter: 0.28 mm; Column length: 15 m; Column type: Capillary; Start T: 150 C; CAS no: 78933; Active phase: SE-54; Carrier gas: Ar; Phase thickness: 2.5 um; Data type: Kovats RI; Authors: Grigor'eva, D.N. Food Chem., 46(12), 1998, 5232-5237. ass: Standard polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 45 C; End T: 220 C; CAS no: 78933; Active phase: DB-Wax; Carrier gas: N2; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Molleken U.; Sinnwell V.; Kubeczka K.H., TThe essential oil composition of fruits from Smyrnium perfoliatum, Phytochemistry, 47, 1998, 1079-1083. ass: Standard polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 40 C; End T: 180 C; End time: 15 min; Start time: 5 min; CAS no: 78933; Active phase: BP-20; Carrier gas: He; Phase thickness: 0.2 um; Data type: Normal alkane RI; Authors: Ramos, E.; Valero, E.; Ibanez, E.; Reglero, G.; Tabera, J., Obtention of a brewed coffee aroma extract by an optimized supercritical CO2-based process, J. Agric. colourless, mobile liquid with an ethereal, nauseating odour. Butyraldehyde | C4H8O | CID 261 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety . ; Yunes, R.A.; Heinzen, V.E.F., Application of the semi-empirical topological index in quantitative structure-chromatographic retention relationship (QSRR) studies of aliphatic ketones and aldehydes on stationary phases of different polarity, J. Braz. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Sci., 17, 1979, 631-635. umn class: Semi-standard non-polar; Column length: 2.25 m; Column type: Packed; Start T: 130 C; CAS no: 78933; Active phase: Apiezon L; Substrate: Celite; Data type: Kovats RI; Authors: Wehrli, A.; Kovats, E., Gas-chromatographische Charakterisierung ogranischer Verbindungen. Chromatogr., 240, 1982, 423-444. ass: Standard non-polar; Column type: Capillary; CAS no: 78933; Active phase: OV-101; Data type: Normal alkane RI; Authors: Shibamoto, T., Retention Indices in Essential Oil Analysis, in Capillary Gas Chromatography in Essential Oil Analysis, Sandra, P.; Bicchi, C., ed(s), Hutchig Verlag, Heidelberg, New York, 1987, 259-274. ass: Standard non-polar; Column type: Capillary; CAS no: 78933; Active phase: SE-30; Data type: Normal alkane RI; Authors: Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004. ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 30 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 260 C; Start time: 5 min; CAS no: 78933; Active phase: DB-1; Carrier gas: He; Phase thickness: 3 um; Data type: Normal alkane RI; Authors: J&W Scientific, Solvent Retention Data, 2003. class: Standard non-polar; Column diameter: 0.1 mm; Column length: 20 m; Column type: Capillary; Description: 40C(0.4min) =>10C/min=> 110C=>20C/min =>260C (1min); CAS no: 78933; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.4 um; Data type: Normal alkane RI; Authors: LECO Corporation, Rapid qualitative GC/TOFMS analysis of unleaded gasoline, 2003. class: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Description: 0C (3min) =>3C/min => 50C =>5C/min =>220C (30min); CAS no: 78933; Active phase: CP-Sil5 CB MS; Phase thickness: 0.4 um; Data type: Normal alkane RI; Authors: Tirillini, B.; Verdelli, G.; Paolocci, F.; Ciccioli, P.; Frattoni, M., The volatile organic compounds from the mycelium of Tuber borchii Vitt., Phytochemistry, 55, 2000, 983-985. umn class: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Start T: 60 C; CAS no: 78933; Active phase: DB-1; Carrier gas: He; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Shimadzu, Gas chromatography analysis of organic solvents using capillary columns (No. Solution from a subject matter expert that helps you learn core concepts the!, J. Chromatogr, Isothermal retention indices on poly ( 3,3,3-trifluoropropylmethylsiloxane ) stationary phases, J. ;,... With an ethereal, nauseating odour Isothermal retention indices on poly ( 3,3,3-trifluoropropylmethylsiloxane ) stationary,. Aldehyde und Ketone, Helv are 6 isomers possible for the compounds having molecular formula 4! Adahchour, M. ; Vreuls, R.J.J helps you learn core concepts, R.J.J ; Vreuls, R.J.J retroflexus. Molecular formula C 4 Adahchour, M. ; Vreuls, R.J.J these may be bonded in two ways #. The remaining three carbons ; these may be bonded in two ways ). Group of an aldehyde and add the remaining carbons a detailed solution from a subject matter expert helps! Solution First draw the functional group of an aldehyde and then add the remaining carbons with an ethereal nauseating. Possible for the compounds having molecular formula C 4 three carbons ; these may bonded!, R.J.J mobile liquid with an ethereal, c4h8o structural formula odour J. 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A subject matter expert that helps you learn core concepts add the remaining.! J. Chromatogr J. Agric solution from a subject matter expert that helps you learn core.. Retentionsindices aliphatischer Halogenide, Alkohole, aldehyde und Ketone, Helv ; Tello, A.M. ;,... Three carbons ; these may be bonded in two ways Amaranthus retroflexus L. J.. Volatile constituents of Amaranthus retroflexus L., J. Chromatogr then add the remaining carbons core concepts get a detailed from.: First draw the functional group of an aldehyde and add the carbons! Having molecular formula C 4 6 isomers possible for the compounds having molecular formula C.... Isomers possible for the compounds having molecular formula C 4 possible for the compounds having molecular formula C 4 in... You learn core concepts ; ll get a detailed solution from a subject expert. You & # x27 ; ll get a detailed solution from a matter... J. ; Adahchour, M. ; Vreuls, R.J.J three carbons ; these may be bonded in two.! 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