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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+
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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-.
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+e
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Monoisotopic Mass:
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M+CH3CNH
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M+.
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M+Na
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Found 409 results
Search term:
MF = 'C_{21}H_{20}O_{2}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
74017
zoom
C
21
H
20
O
2
304.3823
32
27
0
0
280374
zoom
C
21
H
20
O
2
304.3823
26
22
0
0
2052303
- 0/1 defined
zoom
C
21
H
20
O
2
304.3823
24
16
0
0
9711576
zoom
C
21
H
20
O
2
304.3823
24
16
0
0
1152661
zoom
C
21
H
20
O
2
304.3823
23
15
0
0
1367344
zoom
C
21
H
20
O
2
304.3823
21
12
0
0
15077173
zoom
C
21
H
20
O
2
304.3823
21
20
0
0
30775515
zoom
C
21
H
20
O
2
304.3823
21
11
0
0
2855088
zoom
C
21
H
20
O
2
304.3823
21
17
0
0
30775750
zoom
C
21
H
20
O
2
304.3823
19
13
0
0
1367952
zoom
C
21
H
20
O
2
304.3823
17
11
0
0
1033172
zoom
C
21
H
20
O
2
304.3823
16
10
0
0
4646085
zoom
C
21
H
20
O
2
304.3823
16
26
0
0
1363031
zoom
C
21
H
20
O
2
304.3823
14
7
0
0
495782
- 0/2 defined
zoom
C
21
H
20
O
2
304.3823
12
11
0
0
2035202
- 0/2 defined
zoom
C
21
H
20
O
2
304.3823
12
9
0
0
30775516
- 0/1 defined
zoom
C
21
H
20
O
2
304.3823
11
8
0
0
13303338
- 0/1 defined
zoom
C
21
H
20
O
2
304.3823
10
8
0
0
4643176
zoom
C
21
H
20
O
2
304.3823
10
8
0
0
2796080
zoom
C
21
H
20
O
2
304.3823
9
5
0
0
1
2
3
4
5
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