Syringic acid

Mass

MS-NW-2350          
4-hydroxy-3,5-dimethoxybenzoic acid
C9H10O5             (Mass of molecular ion:    198)

   Source Temperature: 230 °C
   Sample Temperature: 160 °C
   Direct, 75 eV

      15.0       5.2
      17.0       2.3
      18.0      10.9
      27.0       1.6
      28.0       8.7
      29.0       2.9
      31.0       1.1
      37.0       1.7
      38.0       4.2
      39.0       9.8
      40.0       2.0
      41.0       2.6
      42.0       1.2
      43.0       2.5
      44.0       3.5
      45.0       2.4
      49.0       1.1
      50.0       5.6
      51.0       6.4
      52.0       2.1
      53.0       6.0
      55.0       2.8
      61.0       1.0
      62.0       1.4
      63.0       1.3
      65.0       7.1
      66.0       4.3
      67.0       7.2
      68.0       1.7
      69.0       3.5
      71.0       2.4
      77.0       2.7
      78.0       2.3
      79.0       6.0
      81.0       6.4
      82.0       1.4
      84.0       5.6
      93.0       6.5
      94.0       1.1
      95.0       2.9
      96.0       1.2
      97.0       4.3
     107.0       1.3
     108.0       2.2
     109.0      14.6
     110.0       2.3
     111.0       2.5
     112.0       4.3
     123.0       3.5
     125.0       1.3
     127.0      19.2
     128.0       1.3
     135.0       1.4
     137.0       4.8
     138.0       1.8
     139.0       1.6
     140.0       3.1
     141.0       1.0
     151.0       1.9
     152.0       2.2
     153.0       3.9
     154.0       1.9
     155.0       7.9
     168.0       1.3
     181.0       6.2
     182.0       1.2
     183.0      29.5
     184.0       2.7
     197.0       1.3
     198.0     100.0
     199.0       9.8
     200.0       1.5
     212.0       1.0

Assign. Shift(ppm) A 9.2 B 7.230 C 3.823 D 3.8

     Hz     ppm     Int.

    648.12   7.237    411
    342.70   3.827   1000
    336.77   3.761     26
    335.89   3.751     26