4-Aminosalicylic acid

Mass

MS-NW-0199          
4-aminosalicylic acid
C7H7NO3             (Mass of molecular ion:    153)

   Source Temperature: 200 °C
   Sample Temperature:   0 °C
   Direct, 75 eV

      26.0       1.2
      27.0       4.7
      28.0       7.4
      29.0       1.9
      37.0       2.6
      38.0       5.5
      38.5       1.5
      39.0       9.3
      39.5       3.9
      40.0       4.3
      41.0       6.1
      42.0       2.1
      44.0       5.1
      45.0       3.0
      49.0       1.2
      50.0       5.5
      51.0      12.7
      52.0      24.4
      53.0      12.9
      53.5      11.4
      54.0       4.8
      55.0       2.1
      61.0       1.8
      62.0       3.9
      62.5       4.3
      63.0       6.3
      64.0       2.4
      65.0       2.5
      66.0       2.5
      67.0       1.1
      67.5       1.0
      68.0       8.6
      76.0       1.6
      77.0       1.6
      78.0      10.6
      79.0      74.2
      80.0      21.9
      81.0       5.1
      82.0       1.1
      96.0       1.3
     106.0       5.0
     107.0      57.5
     108.0       7.3
     109.0      15.4
     110.0       1.2
     124.0       2.2
     134.0       1.1
     135.0     100.0
     136.0      16.7
     137.0       1.3
     152.0       1.4
     153.0      82.0
     154.0       7.4

Assign. Shift(ppm) A 7.454 B 6.5 C 6.12 D 6.01 J(A,C)=8.6HZ. J(B,C)=2.1HZ.

     Hz     ppm     Int.

    672.17   7.506    570
    663.57   7.410    638
    583.59   6.517     95
    553.13   6.177    375
    550.98   6.153    478
    544.63   6.082    280
    542.48   6.058    550
    538.96   6.018   1000
    536.82   5.994    622
    531.74   5.938    139