GOLM METABOLOME DATABASE
How would you rate the quality of this mass spectrum?
poor, not helpful 
 outstanding, most helpful.
This spectrum was 0 times rated; on average=0.0

Caffeine

 

Replica Mass Spectra of Caffeine

replicalib entry datedetectionmethodspecies
528 August 2012  MassBank GC 2010 Kusano 
728 August 2012  MassBank GC 2010 Ara 
628 August 2012  MassBank GC 2010 Tsujimoto 
125 January 2005 MS-TOFM[MOR] 
223 August 2005  M[FAME4090] 
828 August 2012  MassBank GC 2010 Ara 
319 July 2007 MS-TOFMDN35Reference Substance
7 spectrum(a)
rotate: click+drag; translate: alt+click+drag; zoom: mousewheel; save: mol

Spectrum Details

analyteCaffeine
analyte InChIInChI=1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3
analyte mass194.19
chromatogram6051if_13
citationNA
authorsErban A, Strehmel N, 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 date12 April 2010
metabolite role 
retention time (sec)1,096.14
retention index (VAR5 method, n-alkanes C10–C36)1.882,74 (observed)
base peak (m/z)67
maximal intensity608.648
mass-intensity-peaks cardinality170 intensities
minimal m/z45
maximal m/z996
download JCAMP DXSpectrumJcampDx.ashx?id=43595824-4fd6-4b29-afc2-2771e487f6f3
download MSPSpectrumMsp.ashx?id=43595824-4fd6-4b29-afc2-2771e487f6f3

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

comments on this mass spectrum

Post a Comment
Name:
 
Website:  
Email:
Comments:
service last updated 17/02/2017 © 2008-2014 Golm Metabolome Database - All rights reserved
Top