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MassMS-NW-5421 (-)-methyl (R)-3-hydroxybutyrate C5H10O3 (Mass of molecular ion: 118)
Source Temperature: 260 °C Sample Temperature: 190 °C Reservoir, 75 eV
13.0 1.1 14.0 8.5 15.0 22.4 18.0 1.7 19.0 2.6 26.0 1.5 27.0 6.3 28.0 4.8 29.0 19.4 30.0 1.4 31.0 15.8 32.0 5.5 33.0 7.0 38.0 1.0 39.0 5.5 40.0 1.1 41.0 8.0 42.0 28.8 43.0 100.0 44.0 13.1 45.0 55.1 46.0 1.4 57.0 1.1 58.0 4.1 59.0 10.7 60.0 1.1 61.0 12.3 69.0 6.5 71.0 26.1 72.0 1.1 74.0 50.2 75.0 2.8 85.0 5.4 87.0 16.7 100.0 3.7 103.0 15.6
400 MHz in CDCl3
90 MHz in CDCl3
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1H NMR 399.65 MHz C5 H10 O3 0.05 ml : 0.5 ml CDCl3 (-)-methyl (R)-3-hydroxybutyrate 
Assign. Shift(ppm)
A 4.210 B 3.708 C 3.6 D *1 2.48 E *1 2.47 F 1.232 D AND E WERE CONFIRMED BY LAOCN PROGRAM.
Hz ppm Int.1692.50 4.235 26 1691.65 4.233 61 1690.92 4.232 37 1686.28 4.220 63 1685.42 4.218 83 1684.57 4.216 81 1679.93 4.204 65 1679.20 4.202 84 1678.34 4.200 79 1672.85 4.186 61 1672.00 4.184 33 1481.93 3.709 1000 1002.56 2.509 22 991.82 2.482 392 986.57 2.469 217 984.50 2.464 214 502.32 1.257 23 501.10 1.254 24 495.61 1.241 700 489.26 1.225 655
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1H NMR 89.56 MHz C5 H10 O3 0.04 ml : 0.5 ml CDCl3 (-)-methyl (R)-3-hydroxybutyrate Assign. Shift(ppm)
A 4.21 B 3.710 C 3.24 D *1 2.50 E *1 2.43 F 1.233
Hz ppm Int.386.00 4.310 31 380.56 4.250 34 379.69 4.240 42 379.13 4.234 39 374.19 4.179 39 373.69 4.173 45 372.88 4.164 40 367.44 4.103 36 332.38 3.712 1000 290.50 3.244 115 224.19 2.504 282 218.69 2.442 125 217.38 2.428 130 113.50 1.268 607 107.25 1.198 567
in CDCl3
liquid film
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