pimpinellin(131-12-4) IR2

Mass

MS-IW-7255          
5,6-dimethoxyfuro(2,3-H)chromen-2-one
C13H10O5            (Mass of molecular ion:    246)

   Source Temperature: 180 °C
   Sample Temperature: 190 °C
   Direct, 75 eV

      17.0       3.4
      18.0      18.0
      28.0      23.0
      38.0       2.2
      44.0       2.0
      50.0       1.1
      66.0       3.5
      75.0       1.5
      76.0       1.9
      77.0       1.5
      80.0       1.4
      87.0       1.3
      89.0       1.1
      91.0       2.4
      94.0       3.0
      95.0       2.8
     103.0       1.3
     104.0       3.2
     109.0       1.4
     119.0       2.9
     123.0       3.7
     132.0       2.0
     137.0       2.3
     145.0       1.5
     147.0       9.8
     148.0       1.0
     157.0       2.4
     160.0       6.1
     173.0       1.3
     175.0      11.8
     176.0       1.3
     185.0       2.4
     188.0       4.1
     203.0       4.4
     230.0       1.0
     231.0      67.1
     232.0       9.3
     233.0       1.3
     246.0     100.0
     247.0      14.4
     248.0       2.0