FK 838(131185-37-0) IR1

Mass

MS2001-00787WA      
4-(6-oxo-3-(2-phenylpyrazolo(1,5-a)pyridin-3-yl)-1(6H)-pyridazinyl)butanoic acid
C21H18N4O3          (Mass of molecular ion:    374)

   Source Temperature: 200 °C
   Sample Temperature:  90 °C
   Direct, 70 eV

      27.0       1.2
      41.0       2.4
      45.0       1.5
      51.0       2.5
      75.0       1.6
      76.0       1.1
      77.0       5.6
      78.0       7.9
      79.0       1.0
     101.0       1.8
     102.0       1.3
     103.0       1.0
     115.0       1.4
     127.0       1.4
     128.0      23.4
     129.0       3.0
     164.0       1.8
     192.0       1.0
     198.0       1.3
     203.0       1.5
     204.0       1.8
     205.0       2.4
     218.0       2.5
     219.0       2.1
     229.0       6.0
     230.0       3.4
     231.0      47.2
     232.0       8.8
     233.0       1.0
     244.0       2.6
     245.0       1.0
     246.0       1.0
     258.0       1.5
     259.0       2.9
     260.0       1.4
     272.0      10.6
     273.0       4.2
     274.0      12.6
     275.0       2.6
     287.0      35.6
     288.0       9.4
     289.0       4.2
     301.0       3.6
     302.0      10.2
     303.0       2.2
     314.0       1.0
     315.0       4.2
     316.0       1.0
     329.0       1.1
     357.0       2.8
     374.0     100.0
     375.0      24.0
     376.0       3.7