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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
M+.
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M+Na
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+e
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Found 14278 results
Search term:
MF = 'C_{18}H_{20}N_{4}O_{3}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
21802867
- 0/2 defined
zoom
C
18
H
20
N
4
O
3
340.3764
38
29
0
0
2382694
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
36
28
0
0
23499499
- 1/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
35
18
0
0
2406794
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
33
28
0
0
2141035
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
31
24
0
0
2981633
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
30
22
0
0
568394
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
30
21
0
0
532509
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
26
18
0
0
822120
zoom
C
18
H
20
N
4
O
3
340.3764
26
19
0
0
1776254
zoom
C
18
H
20
N
4
O
3
340.3764
26
14
0
0
7854360
zoom
C
18
H
20
N
4
O
3
340.3764
26
17
0
0
814369
zoom
C
18
H
20
N
4
O
3
340.3764
25
15
0
0
827785
zoom
C
18
H
20
N
4
O
3
340.3764
25
16
0
0
7854327
zoom
C
18
H
20
N
4
O
3
340.3764
25
20
0
0
2407387
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
25
17
0
0
2408306
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
24
14
0
0
564844
- 0/1 defined
zoom
C
18
H
20
N
4
O
3
340.3764
24
18
0
0
807485
zoom
C
18
H
20
N
4
O
3
340.3764
24
12
0
0
2488786
zoom
C
18
H
20
N
4
O
3
340.3764
23
13
0
0
3008470
zoom
C
18
H
20
N
4
O
3
340.3764
23
19
0
0
1
2
3
4
5
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