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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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+H+
+2H+
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Average Mass:
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M+CH3CNH
M+CH3OH2
M+.
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M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
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Monoisotopic Mass:
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M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
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M+acetate
M-.
M+Cl
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Found 288 results
Search term:
MF = 'C_{21}H_{14}N_{4}O_{2}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
859119
zoom
C
21
H
14
N
4
O
2
354.3615
44
32
0
3
1618947
zoom
C
21
H
14
N
4
O
2
354.3615
25
16
0
0
22840
zoom
C
21
H
14
N
4
O
2
354.3615
23
14
0
2
548702
zoom
C
21
H
14
N
4
O
2
354.3615
22
16
0
0
2052742
zoom
C
21
H
14
N
4
O
2
354.36146
20
16
0
0
2158268
zoom
C
21
H
14
N
4
O
2
354.36146
18
12
0
0
4083353
- 0/1 defined
zoom
C
21
H
14
N
4
O
2
354.36146
18
12
0
0
4694454
zoom
C
21
H
14
N
4
O
2
354.3615
18
12
0
0
1446001
zoom
C
21
H
14
N
4
O
2
354.3615
18
13
0
0
1841678
zoom
C
21
H
14
N
4
O
2
354.3615
18
13
0
0
936606
zoom
C
21
H
14
N
4
O
2
354.3615
17
9
0
0
1129552
zoom
C
21
H
14
N
4
O
2
354.3615
16
11
0
0
4156049
- 0/1 defined
zoom
C
21
H
14
N
4
O
2
354.36146
16
12
0
0
4670870
zoom
C
21
H
14
N
4
O
2
354.3615
16
10
0
0
4671757
zoom
C
21
H
14
N
4
O
2
354.3615
15
12
0
0
4752496
zoom
C
21
H
14
N
4
O
2
354.3615
14
9
0
0
12555979
zoom
C
21
H
14
N
4
O
2
354.3615
14
9
0
0
13049895
zoom
C
21
H
14
N
4
O
2
354.3615
14
10
0
0
1140571
zoom
C
21
H
14
N
4
O
2
354.3615
13
8
0
0
1746106
zoom
C
21
H
14
N
4
O
2
354.3615
12
8
0
0
1
2
3
4
5
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