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

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

CAS56305-04-5

MFC14H18O4

MW250.29

¹HNMR

¹³CNMR

IR1

IR2

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

    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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