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Lanosterol (1TMS)

 

Replica Mass Spectra of Lanosterol (1TMS)

replicalib entry datedetectionmethodspecies
108 December 2005 MS-TOFM[MOR] 
201 September 2001 MS-TOFM[EIGTMS]Saccharomyces cerevisiae
312 May 2005  M[NIST] 
419 July 2007 MS-TOFVAR5Reference Substance
519 July 2007 MS-TOFMDN35Reference Substance
1130 March 2011  Fiehn_GC_2010 
601 December 2002 MS-QuadM[2]Cucurbita pepo
719 July 2007 MS-TOFMDN35Reference Substance
901 January 2003 MS-QuadM[2]Standard
1025 January 2005 MS-TOFM[MOR] 
10 spectrum(a)
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Spectrum Details

analyteLanosterol (1TMS)
analyte InChIInChI=1S/C33H58OSi/c1-23(2)13-12-14-24(3)25-17-21-33(8)27-15-16-28-30(4,5)29(34-35(9,10)11)19-20-31(28,6)26(27)18-22-32(25,33)7/h13,24-25,28-29H,12,14-22H2,1-11H3/t24-,25-,28+,29+,31-,32-,33+/m1/s1
analyte mass498.9
chromatogram6069if_45
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 role 
retention time (sec)1,858.29
retention index (VAR5 method, n-alkanes C10–C36)3,390.03 (observed)
base peak (m/z)69
maximal intensity57,310
mass-intensity-peaks cardinality919 intensities
minimal m/z45
maximal m/z1,000
download JCAMP DXSpectrumJcampDx.ashx?id=0619e7f7-75cc-4315-99dd-c1ca8b44a1f9
download MSPSpectrumMsp.ashx?id=0619e7f7-75cc-4315-99dd-c1ca8b44a1f9

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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