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ChemSpider
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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 9024 results
Search term:
MF = 'C_{21}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
4111
zoom
C
21
H
20
N
4
O
3
376.4085
132
102
0
0
4649
zoom
C
21
H
20
N
4
O
3
376.4085
81
140
0
0
29211782
zoom
C
21
H
20
N
4
O
3
376.4085
29
24
0
0
1268637
zoom
C
21
H
20
N
4
O
3
376.4085
28
21
0
0
855345
zoom
C
21
H
20
N
4
O
3
376.4085
27
17
0
0
495812
zoom
C
21
H
20
N
4
O
3
376.4085
27
19
0
0
2413034
zoom
C
21
H
20
N
4
O
3
376.4085
26
15
0
0
4649436
- 0/1 defined
zoom
C
21
H
20
N
4
O
3
376.4085
23
13
0
0
5259457
zoom
C
21
H
20
N
4
O
3
376.4085
23
17
0
0
1700587
zoom
C
21
H
20
N
4
O
3
376.4085
23
11
0
0
2236372
zoom
C
21
H
20
N
4
O
3
376.4085
22
14
0
0
569252
zoom
C
21
H
20
N
4
O
3
376.4085
22
14
0
0
577716
zoom
C
21
H
20
N
4
O
3
376.4085
22
13
0
0
4079439
zoom
C
21
H
20
N
4
O
3
376.4085
22
12
0
0
4410072
zoom
C
21
H
20
N
4
O
3
376.4085
21
12
0
0
4410073
zoom
C
21
H
20
N
4
O
3
376.4085
21
12
0
0
3657227
zoom
C
21
H
20
N
4
O
3
376.4085
21
12
0
0
3812749
zoom
C
21
H
20
N
4
O
3
376.4085
21
12
0
0
957185
zoom
C
21
H
20
N
4
O
3
376.4085
21
10
0
0
1001055
zoom
C
21
H
20
N
4
O
3
376.4085
21
15
0
0
1
2
3
4
5
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