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网站主页CAS数据库列表 155-58-8更多图谱土大黄苷(155-58-8)红外图谱(IR2)

土大黄苷

产品名称 土大黄苷

CAS号155-58-8

分子式C21H24O9

分子量420.41

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  • Mass

    MS-IW-0812          
    rhapontin
    C21H24O9            (Mass of molecular ion:    420)
    

       Source Temperature: 180 °C
       Sample Temperature: 170 °C
       Direct, 75 eV
    

          18.0       1.4
          29.0       1.0
          31.0       1.0
          43.0       2.0
          45.0       1.2
          55.0       2.3
          56.0       1.2
          57.0       3.5
          60.0       5.6
          61.0       1.4
          69.0       2.1
          70.0       1.4
          71.0       1.2
          73.0       4.3
          84.0       1.3
          85.0       1.9
          91.0       1.0
          99.0       1.0
         115.0       1.9
         127.0       1.0
         129.0       1.8
         137.0       1.3
         141.0       2.4
         168.0       1.0
         169.0       4.1
         173.0       1.4
         187.0       1.0
         197.0      20.0
         198.0       3.8
         215.0       3.0
         225.0      10.2
         226.0       2.4
         227.0       1.3
         229.0       1.0
         241.0       2.2
         243.0       4.6
         257.0       2.1
         258.0     100.0
         259.0      17.1
         260.0       2.5
         271.0       1.1
         402.0       1.9
         420.0       9.4
         421.0       2.2
    

400 MHz in DMSO-d6


  • 1H NMR 399.65 MHz
    C21 H24 O9 0.029 g : 0.5 ml DMSO-d6
    rhapontin
    ChemicalStructure
        Assign.     Shift(ppm)
    A 9.46 B 9.00 C 7.038 D 7.001 E 6.968 F 6.909 G 6.858 J 6.749 K 6.590 L 6.356 M *1 5.30 N *1 5.11 P *1 5.04 Q 4.82 R 4.65 S 3.785 T *2 3.737 U *2 3.508 V *3 3.340 W *3 3.28 X *3 3.23 Y *3 3.18 ASSIGNED BY H-H COSY

         Hz     ppm     Int.
    

       3781.13   9.462    393
       3597.41   9.002    431
       2813.72   7.041    167
       2811.74   7.036    191
       2808.23   7.027    101
       2791.90   6.986    164
       2788.39   6.978     67
       2781.98   6.962    118
       2780.00   6.957    111
       2764.59   6.918    203
       2756.20   6.897    117
       2746.58   6.873    154
       2730.41   6.833     93
       2697.30   6.750    142
       2633.67   6.590    151
       2542.42   6.362    105
       2540.28   6.357    187
       2538.15   6.351    102
       2120.51   5.306    187
       2115.33   5.293    194
       2045.44   5.119    174
       2040.71   5.107    173
       2017.82   5.049    172
       2012.48   5.036    175
       1931.92   4.835    132
       1924.29   4.815    137
       1862.95   4.662     71
       1856.84   4.647    120
       1851.35   4.633     74
       1512.76   3.786   1000
       1502.69   3.761     48
       1501.31   3.757     42
       1496.58   3.745     48
       1491.09   3.731     48
       1489.26   3.727     43
       1485.75   3.718     43
       1484.38   3.715     39
       1404.27   3.514     54
       1398.32   3.499     62
       1392.52   3.485     48
       1386.41   3.470     30
       1344.15   3.364     36
       1342.32   3.359     37
       1338.35   3.349     36
       1334.53   3.340     52
       1332.70   3.335     51
       1328.89   3.326     45
       1326.60   3.320     50
       1317.14   3.296     61
       1312.26   3.284     62
       1308.44   3.274     58
       1303.71   3.263     68
       1300.35   3.254     57
       1295.32   3.242     59
       1292.88   3.236     62
       1287.69   3.223     61
       1283.87   3.213     37
       1281.74   3.208     54
       1278.69   3.200     43
       1276.55   3.195     51
       1272.74   3.185     53
       1266.94   3.171     53
    

in DMSO-d6



KBr disc



nujol mull