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网站主页CAS数据库列表 13679-74-8更多图谱2-乙酰-5-甲基噻吩(13679-74-8)质谱(MS)

2-乙酰-5-甲基噻吩

产品名称 2-乙酰-5-甲基噻吩

CAS号13679-74-8

分子式C7H8OS

分子量140.2

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  • Mass

    MS-IW-2616          
    2-acetyl-5-methylthiophene
    C7H8OS              (Mass of molecular ion:    140)
    

       Source Temperature: 220 °C
       Sample Temperature: 160 °C
       Reservoir, 75 eV
    

          15.0       1.2
          27.0       2.8
          38.0       1.3
          39.0       3.9
          43.0      10.2
          45.0      10.1
          50.0       1.6
          51.0       2.9
          52.0       1.1
          53.0      24.8
          54.0       1.1
          57.0       2.0
          58.0       1.8
          59.0       2.6
          62.0       1.1
          63.0       1.4
          69.0       4.9
          70.0       2.5
          71.0       2.2
          82.0       1.2
          95.0       1.9
          96.0       1.4
          97.0      15.1
          98.0       1.1
         125.0     100.0
         126.0       7.7
         127.0       5.1
         140.0      43.9
         141.0       3.8
         142.0       2.2
    

400 MHz in CDCl3


  • 1H NMR 399.65 MHz
    C7 H8 O S 0.05 ml : 0.5 ml CDCl3
    2-acetyl-5-methylthiophene
    ChemicalStructure
        Assign.     Shift(ppm)
    A 7.506 B 6.787 C 2.509 D 2.481 J(A,B)=3.8HZ J(B,D)=1.0HZ

         Hz     ppm     Int.
    

       3001.59   7.511    250
       2997.80   7.502    251
       2715.21   6.794    139
       2714.36   6.792    207
       2713.38   6.790    170
       2712.40   6.787     95
       2711.55   6.785    135
       2710.57   6.783    197
       2709.59   6.780    160
       1012.08   2.533     21
       1002.56   2.509    881
        992.07   2.483    993
        991.21   2.481   1000
    

in CDCl3



liquid film