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MassMS-NW-8163 N,N'-(methylenedi-p-phenylene)dimaleimide C21H14N2O4 (Mass of molecular ion: 358)
Source Temperature: 230 °C Sample Temperature: 200 °C Direct, 75 eV
18.0 2.8 26.0 7.4 27.0 1.0 28.0 2.2 39.0 1.5 51.0 2.2 52.0 1.1 53.0 3.8 54.0 14.4 55.0 1.8 63.0 2.0 76.0 2.8 77.0 5.6 78.0 1.9 80.0 1.2 82.0 5.6 89.0 2.2 90.0 2.1 102.0 2.0 103.0 2.8 104.0 1.8 106.0 1.3 115.0 2.4 116.0 1.6 128.0 1.5 129.0 5.4 130.0 3.9 131.0 1.7 132.0 6.7 138.0 1.1 139.0 1.2 140.0 1.5 144.0 1.1 151.0 2.8 152.0 3.7 153.0 1.8 156.0 1.4 157.0 6.1 158.0 9.8 159.0 1.1 164.0 5.1 165.0 11.2 166.0 2.7 172.0 1.5 177.0 1.9 178.0 2.7 179.0 5.5 180.0 2.7 181.0 1.1 185.0 2.0 186.0 10.1 187.0 1.3 189.0 1.1 190.0 3.1 191.0 2.1 192.0 1.3 204.0 5.0 205.0 3.1 206.0 5.2 207.0 2.3 208.0 1.1 215.0 1.4 216.0 2.4 217.0 2.7 218.0 1.2 219.0 1.2 220.0 1.2 221.0 1.3 231.0 1.2 232.0 6.1 233.0 6.9 234.0 4.3 247.0 2.5 248.0 1.3 249.0 1.2 257.0 1.1 258.0 1.2 259.0 1.7 260.0 4.4 261.0 22.8 262.0 11.1 263.0 1.9 273.0 2.2 274.0 1.1 275.0 4.3 276.0 2.5 277.0 1.6 278.0 1.4 283.0 1.3 284.0 1.1 285.0 1.9 287.0 1.6 288.0 1.0 301.0 5.9 302.0 2.3 303.0 1.6 312.0 1.7 313.0 6.0 314.0 1.8 316.0 1.3 329.0 9.1 330.0 5.7 331.0 1.2 357.0 5.1 358.0 100.0 359.0 23.7 360.0 4.4
90 MHz in DMSO-d6
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1H NMR 89.56 MHz C21 H14 N2 O4 0.037 g : 0.5 ml DMSO-d6 N,N'-(methylenedi-p-phenylene)dimaleimide 
Assign. Shift(ppm)
A 7.35 B 7.28 C 7.152 D 4.033
Hz ppm Int.665.50 7.431 59 664.75 7.423 50 663.00 7.403 38 659.31 7.362 70 656.63 7.332 328 653.25 7.294 371 650.63 7.265 79 648.56 7.242 41 647.13 7.226 52 645.31 7.206 71 644.44 7.196 87 643.00 7.180 57 640.63 7.154 1000 636.25 7.105 30 361.19 4.033 120
in CDCl3
KBr disc
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