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Lactose (1MEOX) (8TMS) BP

 

Replica Mass Spectra of Lactose (1MEOX) (8TMS) BP

replicalib entry datedetectionmethodspecies
1030 March 2011  Fiehn_GC_2010 
201 January 2003 MS-QuadM[2]Standard
301 November 2001 MS-TOFM[EIGTMS]Reference Substance
412 October 2005 MS-TRAPM[BAR] 
522 January 2005 MS-QUADM[ROE] 
601 February 2005 MS-TOFM[6]Reference Substance
1128 August 2012  MassBank GC 2010 Kusano 
701 May 2001 MS-TOFM[EIGTMS]Nicotiana tabacum
1205 June 2013  MRI_2013 
825 January 2005 MS-TOFM[MOR] 
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Spectrum Details

analyteLactose (1MEOX) (8TMS) BP
analyte InChIInChI=1S/C37H89NO11Si8/c1-39-38-26-29(44-52(8,9)10)33(46-54(14,15)16)32(31(45-53(11,12)13)28-41-51(5,6)7)43-37-36(49-57(23,24)25)35(48-56(20,21)22)34(47-55(17,18)19)30(42-37)27-40-50(2,3)4/h26,29-37H,27-28H2,1-25H3/b38-26-
analyte mass948.79
chromatogram6036if_35
citation 
authorsBoelling C, Liebig F, Erban A, Kopka J, Max Planck Institute of Molecular Plant Physiology, Department of Molecular Plant Physiology (Prof. Willmitzer L), Am Muehlenberg 1, D-14476 Golm, Germany
lib entry date19 July 2007
metabolite roleMETB
retention time (sec)1,556.79
retention index (VAR5 method, n-alkanes C10–C36)2,686.53 (observed)
base peak (m/z)73
maximal intensity283,242
mass-intensity-peaks cardinality530 intensities
minimal m/z45
maximal m/z993
download JCAMP DXSpectrumJcampDx.ashx?id=2236add5-f17d-433d-af9b-4341afe52e64
download MSPSpectrumMsp.ashx?id=2236add5-f17d-433d-af9b-4341afe52e64

GC-Method

nameVAR5
citationKopka J, Max Planck Institute of Molecular Plant Physiology, Department of Molecular Plant Physiology (Prof. Willmitzer L), Am Muehlenberg 1, D-14476 Golm, Germany
attributetextdetails
deconvolutionChromaTOFOFFSET: "just above noise"; SMOOTHING: 20; PEAK WIDTH: 6; S/N: 2
derivatizationMEOX; TMSMETHOXYAMINATION: 90min at 30°C; TRIMETHYLSILYLATION: 30min at 37°C
detectorMS-TOFm/z = 70-600; scans:20/s; Pegasus III TOF mass spectrometer
extractionwater:chloroform (2:1; v/v) 15min at 70°C
gas chromatographAgilent GC 6890 
ion sourceEI70eV
mass spectrometry instrumentPegasus III TOF mass spectrometer 
metabolic inactivationshock-frozen in liquid nitrogen 
RIALKANEC10, C12, C15, C18, C19, C22, C28, C32, C36
separationGCCOLUMN:5%phenyl-95%dimethylpolysiloxane, 30+10m, ID:0.25mm, DF:0.25µm, 5PDM VF-5ms (Varian, Darmstadt, Germany); PROGRAM:iso1min 70°C, ramp 9°C/min, iso 5min 350°C; FLOW:Helium, 0.6mL/min; INJECTION:1µL, splitless, 230°C; TRANSFER:250°C; IONSOURCE:250°C
protocolpropertyvalue
extractionwater chloroform(2:1; v/v) 15min at 70°C
derivatizationderivatisationMETHOXYAMINATION, 90min at 30°C
derivatizationderivatisationTRIMETHYLSILYLATION, 30min at 37°C
separationIon source temperature250°C
separationColumn length30+10m (analytical column + guard column)
separationColumn inner diameter0.25mm
separationTemperature programisotherm 1min 70°C, ramp 9°C/min, isotherm 5min 350°C
ion sourceelectron ionization70eV
detectorLECO instrument modelPegasus III TOF mass spectrometer
detectorhighest observed m/zm/z = 600
detectorlowest observed m/zm/z = 70
detectorsampling frequency20 scans/s
detectormass analyzer typeMS-TOF
deconvolutionmoving average smoothing20
deconvolutionsoftwareChromaTOF
deconvolutionsignal-to-noise ratio2
RIRetention indexdecane
RIRetention indexdodecane
RIRetention indexpentadecane
RIRetention indexoctadecane
RIRetention indexnonadecane
RIRetention indexdocosane
RIRetention indexoctacosane
RIRetention indexdotriacontane
RIRetention indexhexatriacontane
ChromatographyChromatographyAgilent GC 6890

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