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网站主页CAS数据库列表 56305-04-5更多图谱6-HYDROXY-2,5,7,8-TETRAMETHYLCHROMAN-2-CARBOXYLIC ACID(56305-04-5)核磁图(13CNMR)

6-HYDROXY-2,5,7,8-TETRAMETHYLCHROMAN-2-CARBOXYLIC ACID

产品名称 6-HYDROXY-2,5,7,8-TETRAMETHYLCHROMAN-2-CARBOXYLIC ACID

CAS号56305-04-5

分子式C14H18O4

分子量250.29


  • Mass

    MS-IW-0095          
    6-hydroxy-2,5,7,8-tetramethyl-2-chromancarboxylic acid
    C14H18O4            (Mass of molecular ion:    250)
    

       Source Temperature: 200 °C
       Sample Temperature: 130 °C
       Direct, 75 eV
    

          18.0       1.9
          27.0       1.5
          29.0       1.1
          39.0       2.7
          41.0       3.3
          43.0      11.6
          44.0       1.1
          51.0       1.4
          53.0       3.5
          55.0       2.5
          65.0       2.3
          67.0       2.1
          69.0       1.9
          77.0       4.2
          78.0       1.0
          79.0       3.2
          81.0       1.2
          83.0       1.4
          87.0       1.0
          91.0       6.9
          92.0       1.0
          93.0       2.4
          94.0       1.2
          95.0       1.2
         102.0       1.4
         102.5       1.8
         103.0       1.4
         105.0       2.8
         107.0       2.2
         115.0       1.9
         117.0       1.4
         119.0       1.8
         121.0      12.0
         122.0       1.6
         125.0       1.6
         128.0       1.2
         131.0       1.5
         133.0       1.1
         135.0       4.2
         136.0      18.5
         137.0       3.0
         145.0       1.7
         146.0       1.1
         147.0       1.4
         149.0       4.4
         159.0       2.1
         161.0       3.8
         162.0       1.7
         163.0       2.6
         164.0     100.0
         165.0      19.6
         166.0       2.0
         175.0       4.0
         176.0       3.6
         177.0       3.0
         187.0       3.3
         188.0       1.6
         189.0      12.0
         190.0       8.2
         191.0       2.1
         203.0       6.2
         204.0       3.3
         205.0      52.9
         206.0       7.8
         217.0       7.6
         218.0       1.1
         231.0       1.3
         232.0       4.3
         249.0       1.8
         250.0      86.5
         251.0      13.4
         252.0       1.6
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C14 H18 O4 0.048 g : 0.5 ml DMSO-d6
    6-hydroxy-2,5,7,8-tetramethyl-2-chromancarboxylic acid
    ChemicalStructure
        Assign.     Shift(ppm)
    A 7.45 B *1 2.550 C *1 2.410 D *2 2.290 E *3 2.058 F *3 2.034 G 1.980 J *2 1.732 K 1.496 assigned by C-H COSY

         Hz     ppm     Int.
    

       2978.97   7.454     84
       1028.46   2.574     31
       1017.56   2.547     42
       1015.00   2.540     51
       1011.79   2.532     50
       1009.23   2.526     44
        972.48   2.434     39
        967.78   2.422     33
        961.58   2.407     49
        926.53   2.319     43
        923.76   2.312     45
        920.34   2.303     41
        917.13   2.295     35
        913.29   2.286     49
        910.29   2.278     52
        907.09   2.270     44
        904.10   2.263     33
        822.68   2.059    796
        813.07   2.035    809
        791.70   1.981    804
        707.51   1.771     34
        701.31   1.755     42
        696.40   1.743     45
        694.26   1.738     46
        689.99   1.727     45
        688.06   1.722     42
        683.15   1.710     41
        598.10   1.497   1000
    

in DMSO-d6



KBr disc



nujol mull



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