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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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M+CH3CNH
M+CH3OH2
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M+Na
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+e
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Found 3223 results
Search term:
MF = 'C_{21}H_{18}N_{4}O_{4}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
8353972
- 2/2 defined
zoom
C
21
H
18
N
4
O
4
390.392
42
48
0
0
573952
zoom
C
21
H
18
N
4
O
4
390.392
26
18
0
0
957137
zoom
C
21
H
18
N
4
O
4
390.392
25
15
0
0
2845314
zoom
C
21
H
18
N
4
O
4
390.39202
25
16
0
0
19644908
- 0/2 defined
zoom
C
21
H
18
N
4
O
4
390.392
25
18
0
0
1550005
zoom
C
21
H
18
N
4
O
4
390.392
24
13
0
0
1515782
zoom
C
21
H
18
N
4
O
4
390.392
22
14
0
0
3657223
zoom
C
21
H
18
N
4
O
4
390.39202
21
12
0
0
7921464
zoom
C
21
H
18
N
4
O
4
390.392
20
16
0
0
2494597
- 0/1 defined
zoom
C
21
H
18
N
4
O
4
390.392
20
14
0
0
1493151
zoom
C
21
H
18
N
4
O
4
390.392
20
13
0
0
571736
zoom
C
21
H
18
N
4
O
4
390.392
19
13
0
0
2836599
zoom
C
21
H
18
N
4
O
4
390.39202
19
12
0
0
1402263
- 1/1 defined
zoom
C
21
H
18
N
4
O
4
390.392
19
12
0
0
1434044
zoom
C
21
H
18
N
4
O
4
390.392
19
14
0
0
2904046
zoom
C
21
H
18
N
4
O
4
390.39202
19
12
0
0
4410079
zoom
C
21
H
18
N
4
O
4
390.39202
19
10
0
0
4740811
- 0/1 defined
zoom
C
21
H
18
N
4
O
4
390.392
19
11
0
0
6339626
zoom
C
21
H
18
N
4
O
4
390.392
19
15
0
0
17748527
zoom
C
21
H
18
N
4
O
4
390.392
19
12
0
0
1
2
3
4
5
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