Crotonic anhydride

Mass

MS-NW-1226          
crotonic anhydride
C8H10O3             (Mass of molecular ion:    154)

   Source Temperature: 260 °C
   Sample Temperature: 180 °C
   Reservoir, 75 eV

      15.0       1.8
      27.0       1.0
      28.0       2.2
      37.0       1.0
      38.0       2.3
      39.0      19.6
      40.0       3.6
      41.0      30.1
      42.0       1.3
      43.0       5.8
      68.0       2.8
      69.0     100.0
      70.0       4.7
      86.0       2.0
     126.0       4.1

Assign. Shift(ppm) A 7.106 B 5.871 C 1.914 J(A,B)=15.5HZ J(A,C)=6.9HZ J(B,C)=-1.7HZ

     Hz     ppm     Int.

    654.81   7.312     62
    649.56   7.253     75
    647.88   7.235    208
    640.94   7.157    209
    639.31   7.139     84
    634.06   7.080     71
    632.38   7.061    264
    625.50   6.985    268
    618.63   6.908     83
    535.19   5.976     82
    533.56   5.958    273
    531.88   5.939    283
    530.19   5.920    103
    519.69   5.803     63
    518.06   5.785    210
    516.38   5.766    222
    514.75   5.748     82
    175.69   1.962    974
    174.00   1.943   1000
    170.25   1.901     69
    168.75   1.885    964
    167.06   1.866    988