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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
±
(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-.
M+Cl
-e
+e
min/max
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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-.
M+Cl
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Found 8692 results
Search term:
MF = 'C_{21}H_{20}N_{2}O_{3}'
1
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
20043
zoom
C
21
H
20
N
2
O
3
348.3951
52
38
0
0
4619300
zoom
C
21
H
20
N
2
O
3
348.3951
38
26
0
0
649670
zoom
C
21
H
20
N
2
O
3
348.3951
32
21
0
0
65865
- 3/3 defined
zoom
C
21
H
20
N
2
O
3
348.3951
31
111
0
0
663108
zoom
C
21
H
20
N
2
O
3
348.3951
30
18
0
0
638174
zoom
C
21
H
20
N
2
O
3
348.3951
30
17
0
0
2167439
zoom
C
21
H
20
N
2
O
3
348.3951
29
17
0
0
948893
zoom
C
21
H
20
N
2
O
3
348.3951
28
19
0
0
633520
zoom
C
21
H
20
N
2
O
3
348.3951
28
19
0
0
495279
- 0/1 defined
zoom
C
21
H
20
N
2
O
3
348.3951
28
23
0
0
390543
- 3/3 defined
zoom
C
21
H
20
N
2
O
3
348.3951
27
25
0
0
948892
zoom
C
21
H
20
N
2
O
3
348.3951
27
14
0
0
1216479
zoom
C
21
H
20
N
2
O
3
348.3951
27
26
0
0
5280107
zoom
C
21
H
20
N
2
O
3
348.3951
27
14
0
0
17792679
zoom
C
21
H
20
N
2
O
3
348.3951
26
24
0
0
2379337
- 0/1 defined
zoom
C
21
H
20
N
2
O
3
348.3951
26
19
0
0
2380996
zoom
C
21
H
20
N
2
O
3
348.3951
26
15
0
0
602673
zoom
C
21
H
20
N
2
O
3
348.3951
26
15
0
0
2179725
- 0/2 defined
zoom
C
21
H
20
N
2
O
3
348.3951
25
16
0
0
2211385
- 0/1 defined
zoom
C
21
H
20
N
2
O
3
348.3951
25
17
0
0
1
2
3
4
5
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