Nalidixic acid

Mass

MS-NW-6855          
1-ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid
C12H12N2O3          (Mass of molecular ion:    232)

   Source Temperature: 210 °C
   Sample Temperature: 160 °C
   Direct, 75 eV

      18.0       1.9
      27.0       4.4
      28.0       2.4
      29.0       2.6
      38.0       1.3
      39.0       4.0
      40.0       1.0
      41.0       1.0
      42.0       1.7
      44.0       1.8
      50.0       1.3
      51.0       3.0
      52.0       3.2
      53.0       5.6
      62.0       1.5
      63.0       4.2
      64.0       3.4
      65.0       4.0
      66.0       1.5
      75.0       1.1
      76.0       2.6
      77.0       4.7
      78.0       2.5
      79.0       1.4
      80.0       1.1
      89.0       2.4
      90.0       2.0
      91.0       2.4
      92.0       4.8
      93.0       2.7
     102.0       1.4
     103.0       1.6
     104.0       6.0
     105.0       2.2
     107.0       1.1
     116.0       1.5
     117.0       2.3
     118.0       1.4
     119.0       1.3
     120.0       1.4
     129.0       1.2
     130.0       1.2
     131.0       7.0
     132.0      13.0
     133.0       2.0
     145.0       7.3
     146.0       1.1
     159.0       7.2
     160.0      22.4
     161.0       3.2
     173.0       9.4
     174.0       1.2
     187.0       6.7
     188.0     100.0
     189.0      13.4
     190.0       1.1
     232.0       6.8
     233.0       1.0

Assign. Shift(ppm) A 14.87 B 9.174 C 8.602 D 7.597 E 4.64 F 2.712 G 1.425 J(C,D)=8.2HZ.

     Hz     ppm     Int.

   1331.62  14.869    117
    821.68   9.175    328
    774.86   8.652    125
    766.72   8.561    150
    684.28   7.641    161
    675.92   7.548    133
    419.69   4.687    172
    412.55   4.607    185
    242.93   2.713   1000
    134.55   1.503    219
    127.51   1.424    494
    120.48   1.346    195