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ChemSpider
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Structure
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Molecular Formula:
Define range intervals using parentheses.
E.g. C7H(10-14)O(0-4)
Molecular Weight:
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(example: 123 ± 1)
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Average Mass:
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M+CH3CNH
M+CH3OH2
M+.
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M+Na
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M-H
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+e
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M+CH3CNH
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Found 5324 results
Search term:
MF = 'C_{20}H_{19}NO_{4}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
599620
- 1/1 defined
zoom
C
20
H
19
NO
4
337.3692
118
92
0
0
599621
- 1/1 defined
zoom
C
20
H
19
NO
4
337.3692
100
67
0
0
2016208
- 1/1 defined
zoom
C
20
H
19
NO
4
337.3692
92
61
0
0
1245156
zoom
C
20
H
19
NO
4
337.3692
79
51
0
0
9800
zoom
C
20
H
19
NO
4
337.3692
74
71
0
0
5384644
- 1/1 defined
zoom
C
20
H
19
NO
4
337.3692
70
45
0
0
90462
- 0/1 defined
zoom
C
20
H
19
NO
4
337.3692
68
69
0
29
2042192
- 1/1 defined
zoom
C
20
H
19
NO
4
337.36916
61
41
0
0
4925623
- 2/2 defined
zoom
C
20
H
19
NO
4
337.3692
61
61
0
0
3268367
- 0/1 defined
zoom
C
20
H
19
NO
4
337.3692
59
63
0
0
4393508
- 0/1 defined
zoom
C
20
H
19
NO
4
337.36916
55
48
0
0
8816031
zoom
C
20
H
19
NO
4
337.3692
51
43
0
0
17346931
- 2/2 defined
zoom
C
20
H
19
NO
4
337.3692
50
58
0
0
5486750
- 1/1 defined
zoom
C
20
H
19
NO
4
337.3692
43
30
0
0
1034175
zoom
C
20
H
19
NO
4
337.3692
43
33
0
0
3789720
zoom
C
20
H
19
NO
4
337.36916
41
32
0
0
1245053
- 1/1 defined
zoom
C
20
H
19
NO
4
337.3692
40
34
0
0
658616
zoom
C
20
H
19
NO
4
337.3692
39
30
0
0
59322
zoom
C
20
H
19
NO
4
337.3692
37
46
0
0
1289452
zoom
C
20
H
19
NO
4
337.3692
37
27
0
0
1
2
3
4
5
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