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网站主页CAS数据库列表 787-07-5更多图谱丁二酰丁二酸二乙酯(787-07-5)质谱(MS)

丁二酰丁二酸二乙酯

产品名称 丁二酰丁二酸二乙酯

CAS号787-07-5

分子式C12H16O6

分子量256.25


  • Mass

    MS-NW-8958          
    diethyl 2,5-dioxo-1,4-cyclohexanedicarobxylate
    C12H16O6            (Mass of molecular ion:    256)
    

       Source Temperature: 170 °C
       Sample Temperature: 120 °C
       Direct, 75 eV
    

          18.0       2.4
          27.0      11.1
          28.0       2.5
          29.0      20.3
          31.0       2.7
          39.0       3.1
          40.0       3.1
          41.0       4.3
          42.0       1.3
          43.0       3.5
          45.0       4.4
          51.0       1.7
          52.0       4.2
          53.0       8.7
          54.0       5.3
          55.0      23.6
          56.0       2.2
          65.0       1.9
          68.0       5.0
          69.0       7.2
          70.0       1.6
          71.0       2.8
          72.0       4.1
          73.0      14.1
          79.0       2.3
          80.0       4.4
          81.0      11.1
          82.0       5.0
          83.0       5.7
          85.0       1.4
          87.0       2.6
          93.0       1.8
          96.0      21.7
          97.0       4.3
          98.0       5.0
          99.0      17.0
         100.0       4.4
         101.0      15.3
         107.0       4.0
         108.0      12.4
         109.0      17.4
         110.0       8.4
         111.0      12.0
         112.0       1.5
         113.0       1.7
         114.0      30.2
         115.0       3.3
         121.0       1.2
         125.0       3.1
         126.0       8.4
         127.0       9.2
         128.0       3.0
         129.0       3.9
         134.0       1.3
         135.0       8.8
         136.0      45.5
         137.0      80.6
         138.0       9.5
         139.0       2.5
         142.0      95.2
         143.0       7.5
         153.0       8.9
         154.0      10.3
         155.0      16.5
         156.0       1.7
         162.0       4.3
         163.0       6.6
         164.0      29.0
         165.0      33.3
         166.0       4.1
         180.0       1.7
         181.0      32.5
         182.0      25.0
         183.0      19.7
         184.0       3.0
         192.0      27.9
         193.0       4.4
         199.0      11.0
         200.0       1.2
         208.0       6.3
         209.0      10.9
         210.0      83.3
         211.0      36.5
         212.0       4.5
         227.0      41.4
         228.0       5.8
         238.0      14.2
         239.0       2.1
         254.0       2.3
         255.0       3.3
         256.0     100.0
         257.0      14.0
         258.0       2.1
    

400 MHz in CDCl3


  • 1H NMR 399.65 MHz
    C12 H16 O6 0.043 g : 0.5 ml CDCl3
    diethyl 2,5-dioxo-1,4-cyclohexanedicarobxylate
    ChemicalStructure
        Assign.     Shift(ppm)
    A 12.20 B 4.244 C 3.175 D 1.320

         Hz     ppm     Int.
    

       4876.63  12.203    329
       1707.29   4.272    146
       1700.15   4.255    444
       1693.01   4.237    454
       1685.86   4.219    156
       1268.98   3.176   1000
        534.85   1.339    461
        531.37   1.330     36
        527.70   1.321    903
        520.56   1.303    474
    

in CDCl3



KBr disc



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