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13679-74-8

2-乙酰-5-甲基噻吩(13679-74-8)质谱(MS)

分子式:C7H8OS

分子量: 140.2

InChI:InChI=1S/C7H8OS/c1-5-3-4-7(9-5)6(2)8/h3-4H,1-2H3

InChIKey: YOSDTJYMDAEEAZ-UHFFFAOYSA-N

Smiles:C(=O)(C1SC(C)=CC=1)C

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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

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    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

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liquid film

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