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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
M+NH4
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M-H
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+e
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M+CH3CNH
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Found 885 results
Search term:
MF = 'C_{21}H_{21}BrN_{4}O_{4}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
4869681
zoom
C
21
H
21
BrN
4
O
4
473.3198
23
16
0
0
11136122
zoom
C
21
H
21
BrN
4
O
4
473.3198
21
18
0
0
4719050
zoom
C
21
H
21
BrN
4
O
4
473.3198
20
14
0
0
4050461
zoom
C
21
H
21
BrN
4
O
4
473.31984
18
13
0
0
3963177
zoom
C
21
H
21
BrN
4
O
4
473.3198
17
12
0
0
4822649
zoom
C
21
H
21
BrN
4
O
4
473.3198
16
11
0
0
4612063
zoom
C
21
H
21
BrN
4
O
4
473.3198
15
11
0
0
4691614
zoom
C
21
H
21
BrN
4
O
4
473.3198
11
5
0
0
12520433
zoom
C
21
H
21
BrN
4
O
4
473.3198
11
7
0
0
10829887
zoom
C
21
H
21
BrN
4
O
4
473.3198
11
8
0
0
23494636
- 0/1 defined
zoom
C
21
H
21
BrN
4
O
4
473.3198
10
8
0
0
23494834
- 0/1 defined
zoom
C
21
H
21
BrN
4
O
4
473.3198
10
8
0
0
12524540
zoom
C
21
H
21
BrN
4
O
4
473.3198
10
7
0
0
21481619
zoom
C
21
H
21
BrN
4
O
4
473.3198
10
8
0
0
23026086
zoom
C
21
H
21
BrN
4
O
4
473.3198
9
7
0
0
10956922
- 0/1 defined
zoom
C
21
H
21
BrN
4
O
4
473.3198
9
7
0
0
2490247
zoom
C
21
H
21
BrN
4
O
4
473.3198
9
6
0
0
5055329
- 0/1 defined
zoom
C
21
H
21
BrN
4
O
4
473.3198
9
8
0
0
7892242
zoom
C
21
H
21
BrN
4
O
4
473.3198
9
4
0
0
30522651
zoom
C
21
H
21
BrN
4
O
4
473.3198
8
6
0
0
1
2
3
4
5
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