Pyridine-4-carboxylic acid N-oxide

Mass

MS-IW-0759          
isonicotinic acid 1-oxide
C6H5NO3             (Mass of molecular ion:    139)

   Source Temperature: 130 °C
   Sample Temperature: 130 °C
   Direct, 75 eV

      18.0       5.5
      28.0       2.2
      38.0       2.5
      39.0       8.9
      40.0       1.3
      41.0       1.1
      45.0       1.3
      50.0       3.2
      51.0       5.2
      52.0       2.1
      53.0       1.9
      54.0       1.0
      55.0       1.9
      55.5       1.5
      61.0       1.3
      62.0       1.3
      63.0       3.8
      64.0       1.5
      65.0       1.7
      66.0       2.9
      67.0       1.3
      77.0       1.3
      78.0       4.0
      84.0       1.6
      92.0       1.1
      93.0       1.2
      94.0       8.5
      95.0       5.7
     105.0       1.9
     106.0       4.3
     111.0       1.3
     122.0      18.0
     123.0      14.1
     124.0       1.1
     139.0     100.0
     140.0       7.5