Product NamePhenylbutazone
CAS50-33-9
Molecular FormulaC19H20N2O2
Molecular Weight308.37
InChIInChI=1S/C19H20N2O2/c1-2-3-14-17-18(22)20(15-10-6-4-7-11-15)21(19(17)23)16-12-8-5-9-13-16/h4-13,17H,2-3,14H2,1H3
InChIKey VYMDGNCVAMGZFE-UHFFFAOYSA-N
SmilesN1(C2=CC=CC=C2)C(=O)C(CCCC)C(=O)N1C1=CC=CC=C1

Mass
MS-NW-8538 4-butyl-1,2-diphenyl-3,5-pyrazolidinedione C19H20N2O2 (Mass of molecular ion: 308)
Source Temperature: 200 °C Sample Temperature: 110 °C Direct, 75 eV
18.0 2.2
27.0 4.5
28.0 1.9
29.0 3.5
39.0 3.7
41.0 6.8
42.0 2.5
50.0 1.0
51.0 8.1
52.0 1.1
55.0 9.0
57.0 4.4
63.0 1.5
64.0 4.7
65.0 3.6
69.0 2.6
76.0 1.2
77.0 75.2
78.0 5.8
81.0 1.1
91.0 8.1
92.0 2.1
93.0 13.1
94.0 1.6
104.0 2.5
105.0 16.5
106.0 1.6
118.0 1.6
119.0 4.8
120.0 1.0
125.0 3.9
132.0 1.1
146.0 1.6
152.0 3.0
153.0 2.2
154.0 1.1
160.0 2.0
174.0 1.8
182.0 3.4
183.0 100.0
184.0 38.3
185.0 4.4
211.0 1.1
251.0 1.3
252.0 15.1
253.0 2.9
265.0 2.5
308.0 63.5
309.0 13.9
310.0 1.7
400 MHz in CDCl3
in CDCl3

| 1H NMR | 399.65 MHz |
| C19 H20 N2 O2 | 0.040 g : 0.5 ml CDCl3 |
| 4-butyl-1,2-diphenyl-3,5-pyrazolidinedione | |
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Assign. Shift(ppm) |
Hz ppm Int.
2934.33 7.343 52
2933.11 7.340 51
2929.57 7.331 79
2928.47 7.328 80
2924.44 7.318 1000
2920.78 7.309 558
2919.92 7.307 511
2913.70 7.291 31
2910.77 7.284 33
2910.28 7.283 33
2874.76 7.194 69
2871.58 7.186 80
2871.09 7.185 79
2869.75 7.181 78
2867.43 7.175 69
2866.09 7.172 107
2864.62 7.168 48
2862.55 7.163 68
2861.57 7.161 52
2860.84 7.159 45
2857.54 7.151 35
1360.35 3.404 56
1354.61 3.390 119
1348.88 3.376 56
843.02 2.110 48
837.28 2.096 70
835.21 2.090 47
831.67 2.081 45
831.30 2.081 45
829.59 2.076 47
826.90 2.070 68
821.04 2.055 51
602.78 1.509 43
600.22 1.502 35
597.53 1.496 38
594.12 1.487 57
589.97 1.477 41
586.79 1.469 53
583.98 1.462 32
556.15 1.392 57
548.83 1.374 79
541.26 1.355 71
533.94 1.337 41
366.82 0.918 183
359.50 0.900 352
352.29 0.882 154

in CDCl3

KBr disc

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