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MassMS-NW-7629 7,8-dihydroxy-6-methoxycoumarin C10H8O5 (Mass of molecular ion: 208)
Source Temperature: 210 °C Sample Temperature: 160 °C Direct, 75 eV
15.0 5.3 26.0 1.6 27.0 5.8 28.0 1.4 29.0 8.1 31.0 1.3 37.0 3.2 38.0 4.1 39.0 8.3 40.5 1.0 41.0 1.3 42.0 1.0 49.0 2.3 50.0 9.6 51.0 19.4 52.0 12.7 53.0 14.4 54.0 3.1 55.0 3.4 58.0 1.4 59.5 1.5 61.0 3.2 62.0 5.9 63.0 10.8 64.0 3.5 65.0 4.8 66.0 4.5 67.0 2.1 69.0 3.9 74.0 2.1 75.0 2.6 76.0 1.7 77.0 3.2 78.0 2.6 79.0 9.8 80.0 6.0 81.0 34.6 82.0 2.4 85.0 1.1 90.0 1.3 91.0 3.9 92.0 3.2 93.0 1.5 94.0 1.0 95.0 6.3 96.0 4.9 104.0 2.0 105.0 1.3 106.0 2.0 108.0 3.3 109.0 31.3 110.0 2.6 119.0 3.2 120.0 1.1 121.0 1.1 123.0 5.7 124.0 3.1 133.0 1.9 134.0 4.7 136.0 1.4 137.0 29.6 138.0 2.6 147.0 1.7 150.0 1.8 151.0 2.8 152.0 7.5 160.0 1.3 161.0 1.8 162.0 1.5 165.0 22.6 166.0 2.4 178.0 2.3 179.0 1.1 180.0 23.5 181.0 2.5 190.0 1.4 193.0 36.0 194.0 4.1 207.0 2.3 208.0 100.0 209.0 11.9 210.0 1.8
parameter in DMSO-d6
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1H NMR 300 MHz C10 H8 O5 0.031 g : 0.5 ml DMSO-d6 7,8-dihydroxy-6-methoxycoumarin 
Parameter ppm Hz
D(A) 9.5 D(B) 7.894 D(D) 6.235 J(B,D) 9.4 D(C) 6.800 D(E) 3.894
Hz ppm Int.2849.98 9.500 25 2372.97 7.910 246 2363.62 7.879 255 2040.00 6.800 384 1875.17 6.251 255 1865.82 6.219 246 1168.17 3.894 1000
in DMSO-d6
KBr disc
nujol mull
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