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Urea (2TMS)

 

Replica Mass Spectra of Urea (2TMS)

replicalib entry datedetectionmethodspecies
2028 August 2012  MassBank GC 2010 Tsujimoto 
311 September 2005  M[FAME4090]Standard
412 May 2005  M[NIST] 
511 September 2005  M[FAME4090]Standard
601 January 2003 MS-QuadM[2]Standard
1930 March 2011  Fiehn_GC_2010 
711 September 2005  M[FAME4090]Standard
801 May 2001 MS-TOFM[EIGTMS]Standard Addition
901 August 2001 MS-QuadM[2]Standard
1001 August 2002 MS-QuadM[2]Lotus japonicus (Regel) K. Larsen
19 spectrum(a)
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Spectrum Details

analyteUrea (2TMS)
analyte InChIInChI=1S/C7H20N2OSi2/c1-11(2,3)8-7(10)9-12(4,5)6/h1-6H3,(H2,8,9,10)
analyte mass204.42
chromatogram1318EC07
citationWagner C, Sefkow M, Kopka J (2003) Phytochemistry 62, 887-900
authorsKopka 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 date01 November 2001
metabolite roleMETB
retention time (sec)366.06
retention index (VAR5 method, n-alkanes C10–C36)1,234.56 (predicted, according to Strehmel, N. et.al)
base peak (m/z)147
maximal intensity999
mass-intensity-peaks cardinality25 intensities
minimal m/z70
maximal m/z204
download JCAMP DXSpectrumJcampDx.ashx?id=415056df-b157-4f04-9e29-1f37fd46a31d
download MSPSpectrumMsp.ashx?id=415056df-b157-4f04-9e29-1f37fd46a31d

GC-Method

nameM[EIGTMS]
citationWagner C, Sefkow M, Kopka J (2003) Phytochemistry 62, 887-900
attributetextdetails
deconvolutionAMDIS, National Institute of Standards and Technology, Gaithersburg, MD, USADIRECTION:non scanning; WIDTH: 20; SUBTRACTION: two; RESOLUTION: high; SENSITIVITY: medium; SHAPE: high
derivatizationMEOX; TMSMethoxyamination:60min37°C; Trimethylsilylation:>60min37°C
detectorMS-TOFMZ:70-600; SCANS:6/s; Pegasus II TOF-MS; LECO, St. Joseph, MI, USA
extractionmethanol:water (4:1; v/v); 15min70°C 
ion sourceEI70eV
metabolic inactivationcut; liquid nitrogen; -80°C 
partitioningmethanol fraction of a methanol:water:chloroform (approx. 2:2:1, v/v/v) partitioning 
RIALKANEC12, C15, C19, C22, C28, C32, C36
separationGCCOLUMN:5%diphenyl-95%dimethylpolysiloxane (arylene), 30+10m, ID:0.25mm, DF:0.25microm, Rtx-5SilMS Integra-Guard, #NA (Restek, Bad Homburg, Germany); PROGRAM:iso2min80°C, ramp15°C/min, iso2min350°C; FLOW:Helium, 1.0ml/min; INJECTION:1microL, splitless, 230°C, 2min110psi; TRANSFER:250°C; IONSOURCE:200°C

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