(S)-(+)-柠苹酸

Mass

MS-IW-1757          
(S)-(+)-2-hydroxy-2-methylsuccinic acid
C5H8O5              (Mass of molecular ion:    148)

   Source Temperature: 140 °C
   Sample Temperature: 120 °C
   Direct, 75 eV

      15.0       4.7
      18.0       1.4
      27.0       2.7
      28.0       2.6
      29.0       3.8
      31.0       3.1
      36.0       1.3
      38.0       1.1
      39.0       5.9
      40.0       1.6
      41.0       6.9
      42.0       9.9
      43.0     100.0
      44.0       6.1
      45.0      10.3
      47.0       1.1
      57.0       1.8
      58.0      10.5
      60.0       8.9
      61.0       9.2
      68.0       1.8
      69.0       3.5
      71.0       2.1
      85.0      66.1
      86.0       8.4
      87.0       5.3
      89.0       1.1
     103.0      76.0
     104.0       4.5
     115.0       2.2

Assign. Shift(ppm) A 12. B 5. C *1 2.691 D *1 2.51 E 1.311

     Hz     ppm     Int.

   1084.66   2.715    175
   1069.06   2.675    245
   1009.44   2.526    279
    993.84   2.487    185
    524.17   1.312   1000
    513.70   1.286     22
    513.27   1.285     22