5-(2,5-Dimethoxyphenyl)-5-oxovaleric acid(63467-20-9) IR1

Mass

MS-IW-6123          
4-(2,5-dimethoxybenzoyl)butyric acid
C13H16O5            (Mass of molecular ion:    252)

   Source Temperature: 150 °C
   Sample Temperature: 110 °C
   Direct, 75 eV

      55.0       1.4
      77.0       3.4
      79.0       1.6
      92.0       1.5
     107.0       6.6
     109.0       1.6
     122.0       3.2
     150.0       3.2
     151.0       1.0
     165.0     100.0
     166.0      10.1
     167.0       1.0
     180.0       1.2
     193.0       1.7
     234.0       1.3
     235.0       1.1
     252.0      36.0
     253.0       5.3
     280.0       2.0