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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:
to
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(example: 123 ± 1)
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Nominal Mass:
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-2H+
-H+
+H+
+2H+
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Average Mass:
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±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Monoisotopic Mass:
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±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
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Found 93 results
Search term:
MF = 'C_{21}H_{21}N_{2}O_{2}'
1
2
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5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
83817
zoom
C
21
H
21
N
2
O
2
333.4031
13
14
0
0
1163051
zoom
C
21
H
21
N
2
O
2
333.4031
7
3
0
0
1166163
zoom
C
21
H
21
N
2
O
2
333.4031
7
4
0
0
747256
zoom
C
21
H
21
N
2
O
2
333.4031
6
2
0
0
3008223
zoom
C
21
H
21
N
2
O
2
333.40364
6
3
0
0
1166661
zoom
C
21
H
21
N
2
O
2
333.4031
5
2
0
0
2396745
- 0/1 defined
zoom
C
21
H
21
N
2
O
2
333.40364
5
2
0
0
2396746
- 0/1 defined
zoom
C
21
H
21
N
2
O
2
333.40364
5
2
0
0
324232
zoom
C
21
H
21
N
2
O
2
333.4031
4
2
0
0
4320085
zoom
C
21
H
21
N
2
O
2
333.40364
4
2
0
0
4990345
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
4990424
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
7168334
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
3184214
- 0/1 defined
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
17408800
- 0/2 defined
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
17410722
- 0/2 defined
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
2499804
- 0/1 defined
zoom
C
21
H
21
N
2
O
2
333.4031
3
1
0
0
2947962
- 0/1 defined
zoom
C
21
H
21
N
2
O
2
333.40364
3
1
0
0
317316
zoom
C
21
H
21
N
2
O
2
333.4031
2
1
0
0
8103248
zoom
C
21
H
21
N
2
O
2
333.4036
2
1
0
0
1
2
3
4
5
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