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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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Nominal Mass:
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+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-.
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+e
min/max
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Monoisotopic Mass:
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M+CH3CNH
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M+.
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M+Na
M+NH4
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M-.
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Found 16012 results
Search term:
MF = 'C_{19}H_{20}N_{2}O_{4}'
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2
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
5382664
- 1/1 defined
zoom
C
19
H
20
N
2
O
4
340.3731
73
53
0
0
5382666
- 1/1 defined
zoom
C
19
H
20
N
2
O
4
340.3731
62
45
0
0
9591406
- 0/1 defined
zoom
C
19
H
20
N
2
O
4
340.3731
62
41
0
0
95161
zoom
C
19
H
20
N
2
O
4
340.3731
49
36
0
0
2018418
zoom
C
19
H
20
N
2
O
4
340.3731
48
33
0
0
20702919
zoom
C
19
H
20
N
2
O
4
340.3731
41
27
0
0
20704176
zoom
C
19
H
20
N
2
O
4
340.3731
41
27
0
0
20705880
zoom
C
19
H
20
N
2
O
4
340.3731
41
27
0
0
20708725
- 0/1 defined
zoom
C
19
H
20
N
2
O
4
340.3731
41
30
0
0
20707084
- 0/1 defined
zoom
C
19
H
20
N
2
O
4
340.3731
40
28
0
0
20707771
zoom
C
19
H
20
N
2
O
4
340.3731
40
26
0
0
20703526
zoom
C
19
H
20
N
2
O
4
340.3731
40
26
0
0
11274083
zoom
C
19
H
20
N
2
O
4
340.3731
38
26
0
0
20713680
zoom
C
19
H
20
N
2
O
4
340.3731
36
22
0
0
20706080
zoom
C
19
H
20
N
2
O
4
340.3731
35
22
0
0
677405
zoom
C
19
H
20
N
2
O
4
340.3731
35
21
0
0
20715270
zoom
C
19
H
20
N
2
O
4
340.3731
34
21
0
0
12542667
zoom
C
19
H
20
N
2
O
4
340.3731
31
24
0
0
2269160
- 0/1 defined
zoom
C
19
H
20
N
2
O
4
340.3731
31
26
0
0
637648
zoom
C
19
H
20
N
2
O
4
340.3731
31
21
0
0
1
2
3
4
5
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